21332015222 has 16 divisors (see below), whose sum is σ = 36644271360. Its totient is φ = 9123516648.

The previous prime is 21332015147. The next prime is 21332015227. The reversal of 21332015222 is 22251023312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21332015227) 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, 1557572 + ... + 1571207.

It is an arithmetic number, because the mean of its divisors is an integer number (2290266960).

Almost surely, 2^21332015222 is an apocalyptic number.

21332015222 is a deficient number, since it is larger than the sum of its proper divisors (15312256138).

21332015222 is a wasteful number, since it uses less digits than its factorization.

21332015222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3129275.

The product of its (nonzero) digits is 1440, while the sum is 23.

Adding to 21332015222 its reverse (22251023312), we get a palindrome (43583038534).

The spelling of 21332015222 in words is "twenty-one billion, three hundred thirty-two million, fifteen thousand, two hundred twenty-two".