120000121220 has 96 divisors (see below), whose sum is σ = 307792058112. Its totient is φ = 38360752128.

The previous prime is 120000121211. The next prime is 120000121229. The reversal of 120000121220 is 22121000021.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (120000121211) and next prime (120000121229).

It is not an unprimeable number, because it can be changed into a prime (120000121229) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19052 + ... + 490268.

It is an arithmetic number, because the mean of its divisors is an integer number (3206167272).

Almost surely, 2^120000121220 is an apocalyptic number.

120000121220 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 120000121220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (153896029056).

120000121220 is an abundant number, since it is smaller than the sum of its proper divisors (187791936892).

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

120000121220 is a wasteful number, since it uses less digits than its factorization.

120000121220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 471357 (or 471355 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 120000121220 its reverse (22121000021), we get a palindrome (142121121241).

It can be divided in two parts, 1200001 and 21220, that added together give a palindrome (1221221).

The spelling of 120000121220 in words is "one hundred twenty billion, one hundred twenty-one thousand, two hundred twenty".