1012210120 has 32 divisors (see below), whose sum is σ = 2281243320. Its totient is φ = 404213760.

The previous prime is 1012210099. The next prime is 1012210139. The reversal of 1012210120 is 210122101.

It can be written as a sum of positive squares in 4 ways, for example, as 429567076 + 582643044 = 20726^2 + 24138^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 1012210097 and 1012210106.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3880 + ... + 45160.

Almost surely, 2^1012210120 is an apocalyptic number.

1012210120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1012210120 is an abundant number, since it is smaller than the sum of its proper divisors (1269033200).

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

1012210120 is a wasteful number, since it uses less digits than its factorization.

1012210120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41905 (or 41901 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 1012210120 is about 31815.2498025711. The cubic root of 1012210120 is about 1004.0535862364.

Adding to 1012210120 its reverse (210122101), we get a palindrome (1222332221).

The spelling of 1012210120 in words is "one billion, twelve million, two hundred ten thousand, one hundred twenty".