21022314434 has 16 divisors (see below), whose sum is σ = 34835598720. Its totient is φ = 9434639760.

The previous prime is 21022314431. The next prime is 21022314449. The reversal of 21022314434 is 43441322012.

It is not an unprimeable number, because it can be changed into a prime (21022314431) 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, 6046109 + ... + 6049584.

It is an arithmetic number, because the mean of its divisors is an integer number (2177224920).

Almost surely, 2^21022314434 is an apocalyptic number.

21022314434 is a deficient number, since it is larger than the sum of its proper divisors (13813284286).

21022314434 is a wasteful number, since it uses less digits than its factorization.

21022314434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12095785.

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 21022314434 its reverse (43441322012), we get a palindrome (64463636446).

The spelling of 21022314434 in words is "twenty-one billion, twenty-two million, three hundred fourteen thousand, four hundred thirty-four".