1213002012 has 12 divisors (see below), whose sum is σ = 2830338056. Its totient is φ = 404334000.

The previous prime is 1213001989. The next prime is 1213002017. The reversal of 1213002012 is 2102003121.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×1213002012² = 2942747762232096288, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12), and also a Moran number because the ratio is a prime number: 101083501 = 1213002012 / (1 + 2 + 1 + 3 + 0 + 0 + 2 + 0 + 1 + 2).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213002017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50541739 + ... + 50541762.

Almost surely, 2^1213002012 is an apocalyptic number.

1213002012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1213002012 is an abundant number, since it is smaller than the sum of its proper divisors (1617336044).

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

1213002012 is a wasteful number, since it uses less digits than its factorization.

1213002012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101083508 (or 101083506 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 1213002012 is about 34828.1784192053. The cubic root of 1213002012 is about 1066.4827626091.

Adding to 1213002012 its reverse (2102003121), we get a palindrome (3315005133).

The spelling of 1213002012 in words is "one billion, two hundred thirteen million, two thousand, twelve".