21318222114 has 32 divisors (see below), whose sum is σ = 54141517440. Its totient is φ = 6090920496.

The previous prime is 21318222113. The next prime is 21318222131. The reversal of 21318222114 is 41122281312.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (21318222113) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28198329 + ... + 28199084.

It is an arithmetic number, because the mean of its divisors is an integer number (1691922420).

Almost surely, 2^21318222114 is an apocalyptic number.

21318222114 is an abundant number, since it is smaller than the sum of its proper divisors (32823295326).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21318222114 is a wasteful number, since it uses less digits than its factorization.

21318222114 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56397431 (or 56397425 counting only the distinct ones).

The product of its digits is 1536, while the sum is 27.

The spelling of 21318222114 in words is "twenty-one billion, three hundred eighteen million, two hundred twenty-two thousand, one hundred fourteen".