12010221992 has 8 divisors (see below), whose sum is σ = 22519166250. Its totient is φ = 6005110992.

The previous prime is 12010221983. The next prime is 12010222013. The reversal of 12010221992 is 29912201021.

It can be written as a sum of positive squares in only one way, i.e., 10458334756 + 1551887236 = 102266^2 + 39394^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 750638867 + ... + 750638882.

Almost surely, 2^12010221992 is an apocalyptic number.

It is an amenable number.

12010221992 is a deficient number, since it is larger than the sum of its proper divisors (10508944258).

12010221992 is a wasteful number, since it uses less digits than its factorization.

12010221992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1501277755 (or 1501277751 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 29.

The spelling of 12010221992 in words is "twelve billion, ten million, two hundred twenty-one thousand, nine hundred ninety-two".