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121201121202220 = 2256060056060111
BaseRepresentation
bin11011100011101101010101…
…110001101001000000101100
3120220010201021112020010020001
4123203231111301221000230
5111341224344011432340
61105435005412434044
734346330525020303
oct3343552561510054
9526121245203201
10121201121202220
113568911a237104
121171570a318924
1352822a80a9a37
1421d024645543a
15e02abc9b429a
hex6e3b55c6902c

121201121202220 has 12 divisors (see below), whose sum is σ = 254522354524704. Its totient is φ = 48480448480880.

The previous prime is 121201121202191. The next prime is 121201121202233. The reversal of 121201121202220 is 22202121102121.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3030028030036 + ... + 3030028030075.

It is an arithmetic number, because the mean of its divisors is an integer number (21210196210392).

Almost surely, 2121201121202220 is an apocalyptic number.

121201121202220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121201121202220 is an abundant number, since it is smaller than the sum of its proper divisors (133321233322484).

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

121201121202220 is a wasteful number, since it uses less digits than its factorization.

121201121202220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6060056060120 (or 6060056060118 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 121201121202220 its reverse (22202121102121), we get a palindrome (143403242304341).

The spelling of 121201121202220 in words is "one hundred twenty-one trillion, two hundred one billion, one hundred twenty-one million, two hundred two thousand, two hundred twenty".

Divisors: 1 2 4 5 10 20 6060056060111 12120112120222 24240224240444 30300280300555 60600560601110 121201121202220