21101022022 has 16 divisors (see below), whose sum is σ = 31948686000. Its totient is φ = 10451501280.

The previous prime is 21101022017. The next prime is 21101022031. The reversal of 21101022022 is 22022010112.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 21101021993 and 21101022011.

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, 1595497 + ... + 1608667.

It is an arithmetic number, because the mean of its divisors is an integer number (1996792875).

Almost surely, 2^21101022022 is an apocalyptic number.

21101022022 is a deficient number, since it is larger than the sum of its proper divisors (10847663978).

21101022022 is a wasteful number, since it uses less digits than its factorization.

21101022022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20631.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 21101022022 its reverse (22022010112), we get a palindrome (43123032134).

The spelling of 21101022022 in words is "twenty-one billion, one hundred one million, twenty-two thousand, twenty-two".