21140444322 has 24 divisors (see below), whose sum is σ = 46232377776. Its totient is φ = 6980956056.

The previous prime is 21140444317. The next prime is 21140444323. The reversal of 21140444322 is 22344404112.

21140444322 is a `hidden beast` number, since 211 + 4 + 0 + 4 + 443 + 2 + 2 = 666.

It is a super-2 number, since 2×21140444322² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21140444323) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5486248 + ... + 5490099.

It is an arithmetic number, because the mean of its divisors is an integer number (1926349074).

Almost surely, 2^21140444322 is an apocalyptic number.

21140444322 is an abundant number, since it is smaller than the sum of its proper divisors (25091933454).

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

21140444322 is a wasteful number, since it uses less digits than its factorization.

21140444322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10976462 (or 10976459 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

Adding to 21140444322 its reverse (22344404112), we get a palindrome (43484848434).

The spelling of 21140444322 in words is "twenty-one billion, one hundred forty million, four hundred forty-four thousand, three hundred twenty-two".