21210231023092 has 12 divisors (see below), whose sum is σ = 37123596393156. Its totient is φ = 10603489196480.

The previous prime is 21210231023087. The next prime is 21210231023141. The reversal of 21210231023092 is 29032013201212.

It can be written as a sum of positive squares in 2 ways, for example, as 16519558709476 + 4690672313616 = 4064426^2 + 2165796^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 21210231023092.

It is a congruent number.

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, 406549423 + ... + 406601590.

It is an arithmetic number, because the mean of its divisors is an integer number (3093633032763).

Almost surely, 2^{21210231023092} is an apocalyptic number.

It is an amenable number.

21210231023092 is a deficient number, since it is larger than the sum of its proper divisors (15913365370064).

21210231023092 is a wasteful number, since it uses less digits than its factorization.

21210231023092 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 813157538 (or 813157536 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 28.

The spelling of 21210231023092 in words is "twenty-one trillion, two hundred ten billion, two hundred thirty-one million, twenty-three thousand, ninety-two".