21232373222 has 16 divisors (see below), whose sum is σ = 32457168960. Its totient is φ = 10415029248.

The previous prime is 21232373221. The next prime is 21232373233. The reversal of 21232373222 is 22237323212.

It is a super-2 number, since 2×21232373222² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21232373221) 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, 403163 + ... + 452774.

It is an arithmetic number, because the mean of its divisors is an integer number (2028573060).

Almost surely, 2^21232373222 is an apocalyptic number.

21232373222 is a deficient number, since it is larger than the sum of its proper divisors (11224795738).

21232373222 is a wasteful number, since it uses less digits than its factorization.

21232373222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 856175.

The product of its digits is 12096, while the sum is 29.

Adding to 21232373222 its reverse (22237323212), we get a palindrome (43469696434).

The spelling of 21232373222 in words is "twenty-one billion, two hundred thirty-two million, three hundred seventy-three thousand, two hundred twenty-two".