1000111220120 has 64 divisors (see below), whose sum is σ = 2266670502720. Its totient is φ = 397130033664.

The previous prime is 1000111220047. The next prime is 1000111220137. The reversal of 1000111220120 is 210221110001.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6791189 + ... + 6936891.

It is an arithmetic number, because the mean of its divisors is an integer number (35416726605).

Almost surely, 2^{1000111220120} is an apocalyptic number.

1000111220120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1000111220120 is an abundant number, since it is smaller than the sum of its proper divisors (1266559282600).

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

1000111220120 is a wasteful number, since it uses less digits than its factorization.

1000111220120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146964 (or 146960 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 1000111220120 its reverse (210221110001), we get a palindrome (1210332330121).

The spelling of 1000111220120 in words is "one trillion, one hundred eleven million, two hundred twenty thousand, one hundred twenty".