21230010031012 has 12 divisors (see below), whose sum is σ = 37246100724700. Its totient is φ = 10588266966816.

The previous prime is 21230010031003. The next prime is 21230010031037. The reversal of 21230010031012 is 21013001003212.

It can be written as a sum of positive squares in 2 ways, for example, as 15785889137316 + 5444120893696 = 3973146^2 + 2333264^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6684510387 + ... + 6684513562.

Almost surely, 2^{21230010031012} is an apocalyptic number.

It is an amenable number.

21230010031012 is a deficient number, since it is larger than the sum of its proper divisors (16016090693688).

21230010031012 is a wasteful number, since it uses less digits than its factorization.

21230010031012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13369024350 (or 13369024348 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 21230010031012 its reverse (21013001003212), we get a palindrome (42243011034224).

The spelling of 21230010031012 in words is "twenty-one trillion, two hundred thirty billion, ten million, thirty-one thousand, twelve".