21100231022 has 48 divisors (see below), whose sum is σ = 34603601760. Its totient is φ = 9644918400.

The previous prime is 21100230989. The next prime is 21100231049. The reversal of 21100231022 is 22013200112.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 21100230988 and 21100231006.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19025804 + ... + 19026912.

It is an arithmetic number, because the mean of its divisors is an integer number (720908370).

Almost surely, 2^21100231022 is an apocalyptic number.

21100231022 is a deficient number, since it is larger than the sum of its proper divisors (13503370738).

21100231022 is a wasteful number, since it uses less digits than its factorization.

21100231022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1629 (or 1616 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 21100231022 its reverse (22013200112), we get a palindrome (43113431134).

The spelling of 21100231022 in words is "twenty-one billion, one hundred million, two hundred thirty-one thousand, twenty-two".