22011322440 has 64 divisors (see below), whose sum is σ = 66067243200. Its totient is φ = 5866728192.

The previous prime is 22011322409. The next prime is 22011322471. The reversal of 22011322440 is 4422311022.

It is an interprime number because it is at equal distance from previous prime (22011322409) and next prime (22011322471).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 198279 + ... + 288681.

It is an arithmetic number, because the mean of its divisors is an integer number (1032300675).

Almost surely, 2^22011322440 is an apocalyptic number.

22011322440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22011322440 is an abundant number, since it is smaller than the sum of its proper divisors (44055920760).

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

22011322440 is a wasteful number, since it uses less digits than its factorization.

22011322440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92446 (or 92442 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 22011322440 its reverse (4422311022), we get a palindrome (26433633462).

The spelling of 22011322440 in words is "twenty-two billion, eleven million, three hundred twenty-two thousand, four hundred forty".