1012110120 has 128 divisors (see below), whose sum is σ = 3855686400. Its totient is φ = 231337728.

The previous prime is 1012110119. The next prime is 1012110137. The reversal of 1012110120 is 210112101.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 59379 + ... + 74498.

It is an arithmetic number, because the mean of its divisors is an integer number (30122550).

Almost surely, 2^1012110120 is an apocalyptic number.

1012110120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1012110120 is an abundant number, since it is smaller than the sum of its proper divisors (2843576280).

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

1012110120 is a wasteful number, since it uses less digits than its factorization.

1012110120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133904 (or 133894 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

The square root of 1012110120 is about 31813.6781903633. The cubic root of 1012110120 is about 1004.0205204189.

Adding to 1012110120 its reverse (210112101), we get a palindrome (1222222221).

The spelling of 1012110120 in words is "one billion, twelve million, one hundred ten thousand, one hundred twenty".