120111100120120 has 64 divisors (see below), whose sum is σ = 277028372406240. Its totient is φ = 46840974182400.

The previous prime is 120111100120091. The next prime is 120111100120129. The reversal of 120111100120120 is 21021001111021.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 120111100120120.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120111100120129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22297182 + ... + 27154861.

Almost surely, 2^{120111100120120} is an apocalyptic number.

120111100120120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120111100120120 is an abundant number, since it is smaller than the sum of its proper divisors (156917272286120).

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

120111100120120 is a wasteful number, since it uses less digits than its factorization.

120111100120120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49453576 (or 49453572 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 120111100120120 its reverse (21021001111021), we get a palindrome (141132101231141).

Subtracting from 120111100120120 its reverse (21021001111021), we obtain a palindrome (99090099009099).

The spelling of 120111100120120 in words is "one hundred twenty trillion, one hundred eleven billion, one hundred million, one hundred twenty thousand, one hundred twenty".