12010021012 has 18 divisors (see below), whose sum is σ = 23101921514. Its totient is φ = 5459100240.

The previous prime is 12010020989. The next prime is 12010021027. The reversal of 12010021012 is 21012001021.

It can be written as a sum of positive squares in only one way, i.e., 8223587856 + 3786433156 = 90684^2 + 61534^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 12010021012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12406563 + ... + 12407530.

Almost surely, 2^12010021012 is an apocalyptic number.

It is an amenable number.

12010021012 is a deficient number, since it is larger than the sum of its proper divisors (11091900502).

12010021012 is a wasteful number, since it uses less digits than its factorization.

12010021012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24814119 (or 24814106 counting only the distinct ones).

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

Adding to 12010021012 its reverse (21012001021), we get a palindrome (33022022033).

The spelling of 12010021012 in words is "twelve billion, ten million, twenty-one thousand, twelve".