1121310012 has 24 divisors (see below), whose sum is σ = 2687104336. Its totient is φ = 363667968.

The previous prime is 1121309999. The next prime is 1121310017. The reversal of 1121310012 is 2100131211.

It is a super-2 number, since 2×1121310012² = 2514672286022880288, which contains 22 as substring.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1121310012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121310017) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1262293 + ... + 1263180.

Almost surely, 2^1121310012 is an apocalyptic number.

1121310012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1121310012 is an abundant number, since it is smaller than the sum of its proper divisors (1565794324).

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

1121310012 is a wasteful number, since it uses less digits than its factorization.

1121310012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2525517 (or 2525515 counting only the distinct ones).

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

The square root of 1121310012 is about 33485.9673893409. The cubic root of 1121310012 is about 1038.9035572286.

Adding to 1121310012 its reverse (2100131211), we get a palindrome (3221441223).

The spelling of 1121310012 in words is "one billion, one hundred twenty-one million, three hundred ten thousand, twelve".