21062210116 has 6 divisors (see below), whose sum is σ = 36858867710. Its totient is φ = 10531105056.

The previous prime is 21062210083. The next prime is 21062210153. The reversal of 21062210116 is 61101226012.

It can be written as a sum of positive squares in only one way, i.e., 18991596100 + 2070614016 = 137810^2 + 45504^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2632776261 + ... + 2632776268.

Almost surely, 2^21062210116 is an apocalyptic number.

It is an amenable number.

21062210116 is a deficient number, since it is larger than the sum of its proper divisors (15796657594).

21062210116 is a wasteful number, since it uses less digits than its factorization.

21062210116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5265552533 (or 5265552531 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 22.

Adding to 21062210116 its reverse (61101226012), we get a palindrome (82163436128).

The spelling of 21062210116 in words is "twenty-one billion, sixty-two million, two hundred ten thousand, one hundred sixteen".