21113231002 has 8 divisors (see below), whose sum is σ = 31674700512. Its totient is φ = 10554997500.

The previous prime is 21113230993. The next prime is 21113231047. The reversal of 21113231002 is 20013231112.

It is a sphenic number, since it is the product of 3 distinct primes.

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, 792624 + ... + 818827.

It is an arithmetic number, because the mean of its divisors is an integer number (3959337564).

Almost surely, 2^21113231002 is an apocalyptic number.

21113231002 is a deficient number, since it is larger than the sum of its proper divisors (10561469510).

21113231002 is a wasteful number, since it uses less digits than its factorization.

21113231002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1618004.

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

Adding to 21113231002 its reverse (20013231112), we get a palindrome (41126462114).

The spelling of 21113231002 in words is "twenty-one billion, one hundred thirteen million, two hundred thirty-one thousand, two".