21102231022 has 16 divisors (see below), whose sum is σ = 33511919760. Its totient is φ = 9938011392.

The previous prime is 21102231013. The next prime is 21102231043. The reversal of 21102231022 is 22013220112.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 21102230987 and 21102231005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1598403 + ... + 1611550.

It is an arithmetic number, because the mean of its divisors is an integer number (2094494985).

Almost surely, 2^21102231022 is an apocalyptic number.

21102231022 is a deficient number, since it is larger than the sum of its proper divisors (12409688738).

21102231022 is a wasteful number, since it uses less digits than its factorization.

21102231022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3210147.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 21102231022 its reverse (22013220112), we get a palindrome (43115451134).

The spelling of 21102231022 in words is "twenty-one billion, one hundred two million, two hundred thirty-one thousand, twenty-two".