1321420012 has 96 divisors (see below), whose sum is σ = 2759307264. Its totient is φ = 547430400.

The previous prime is 1321420007. The next prime is 1321420027. The reversal of 1321420012 is 2100241231.

It is a super-2 number, since 2×1321420012² = 3492301696228160288, which contains 22 as substring.

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, 2289868 + ... + 2290444.

It is an arithmetic number, because the mean of its divisors is an integer number (28742784).

Almost surely, 2^1321420012 is an apocalyptic number.

It is an amenable number.

1321420012 is an abundant number, since it is smaller than the sum of its proper divisors (1437887252).

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

1321420012 is a wasteful number, since it uses less digits than its factorization.

1321420012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 719 (or 717 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 1321420012 is about 36351.3412682393. The cubic root of 1321420012 is about 1097.3545276544.

Adding to 1321420012 its reverse (2100241231), we get a palindrome (3421661243).

The spelling of 1321420012 in words is "one billion, three hundred twenty-one million, four hundred twenty thousand, twelve".