21022212110 has 16 divisors (see below), whose sum is σ = 37841777856. Its totient is φ = 8408485728.

The previous prime is 21022212109. The next prime is 21022212119. The reversal of 21022212110 is 1121222012.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21022212119) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 267452 + ... + 337008.

It is an arithmetic number, because the mean of its divisors is an integer number (2365111116).

Almost surely, 2^21022212110 is an apocalyptic number.

21022212110 is a deficient number, since it is larger than the sum of its proper divisors (16819565746).

21022212110 is a wasteful number, since it uses less digits than its factorization.

21022212110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99787.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 21022212110 its reverse (1121222012), we get a palindrome (22143434122).

The spelling of 21022212110 in words is "twenty-one billion, twenty-two million, two hundred twelve thousand, one hundred ten".