1213013012 has 24 divisors (see below), whose sum is σ = 2196230400. Its totient is φ = 585607680.

The previous prime is 1213012979. The next prime is 1213013059. The reversal of 1213013012 is 2103103121.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44783 + ... + 66569.

It is an arithmetic number, because the mean of its divisors is an integer number (91509600).

Almost surely, 2^1213013012 is an apocalyptic number.

It is an amenable number.

1213013012 is a deficient number, since it is larger than the sum of its proper divisors (983217388).

1213013012 is a wasteful number, since it uses less digits than its factorization.

1213013012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22271 (or 22269 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 1213013012 is about 34828.3363369541. The cubic root of 1213013012 is about 1066.4859863672.

Adding to 1213013012 its reverse (2103103121), we get a palindrome (3316116133).

The spelling of 1213013012 in words is "one billion, two hundred thirteen million, thirteen thousand, twelve".