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121020120211200 = 2835275591161053
BaseRepresentation
bin11011100001000100110001…
…010001101001111100000000
3120212111102002020221002102220
4123201010301101221330000
5111330243201233224300
61105215513053211040
734330262253001110
oct3341046121517400
9525442066832386
10121020120211200
1135619387964621
12116a6615490a80
13526b1c0c6c212
1421c5595731040
15ded027480da0
hex6e1131469f00

121020120211200 has 432 divisors, whose sum is σ = 456532027746816. Its totient is φ = 27656622489600.

The previous prime is 121020120211079. The next prime is 121020120211259. The reversal of 121020120211200 is 2112021020121.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 121020120211200.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 751349874 + ... + 751510926.

Almost surely, 2121020120211200 is an apocalyptic number.

121020120211200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121020120211200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (228266013873408).

121020120211200 is an abundant number, since it is smaller than the sum of its proper divisors (335511907535616).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121020120211200 is a wasteful number, since it uses less digits than its factorization.

121020120211200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166680 (or 166661 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 121020120211200 its reverse (2112021020121), we get a palindrome (123132141231321).

The spelling of 121020120211200 in words is "one hundred twenty-one trillion, twenty billion, one hundred twenty million, two hundred eleven thousand, two hundred".