120111021011020 has 96 divisors (see below), whose sum is σ = 272263433682240. Its totient is φ = 44246289899520.

The previous prime is 120111021011017. The next prime is 120111021011027. The reversal of 120111021011020 is 20110120111021.

It is a happy number.

It is a super-2 number, since 2×120111021011020² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is not an unprimeable number, because it can be changed into a prime (120111021011027) 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, 247833535 + ... + 248317705.

It is an arithmetic number, because the mean of its divisors is an integer number (2836077434190).

Almost surely, 2^{120111021011020} is an apocalyptic number.

120111021011020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120111021011020 is an abundant number, since it is smaller than the sum of its proper divisors (152152412671220).

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

120111021011020 is a wasteful number, since it uses less digits than its factorization.

120111021011020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 486395 (or 486393 counting only the distinct ones).

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

Adding to 120111021011020 its reverse (20110120111021), we get a palindrome (140221141122041).

The spelling of 120111021011020 in words is "one hundred twenty trillion, one hundred eleven billion, twenty-one million, eleven thousand, twenty".