1020111120120 has 64 divisors (see below), whose sum is σ = 3065494338720. Its totient is φ = 271570878464.

The previous prime is 1020111120089. The next prime is 1020111120139. The reversal of 1020111120120 is 210211110201.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 1020111120096 and 1020111120105.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7096569 + ... + 7238888.

Almost surely, 2^{1020111120120} is an apocalyptic number.

1020111120120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1020111120120 is an abundant number, since it is smaller than the sum of its proper divisors (2045383218600).

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

1020111120120 is a wasteful number, since it uses less digits than its factorization.

1020111120120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14336064 (or 14336060 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 1020111120120 its reverse (210211110201), we get a palindrome (1230322230321).

The spelling of 1020111120120 in words is "one trillion, twenty billion, one hundred eleven million, one hundred twenty thousand, one hundred twenty".