22151322240 has 64 divisors (see below), whose sum is σ = 70607345760. Its totient is φ = 5907018752.

The previous prime is 22151322239. The next prime is 22151322257. The reversal of 22151322240 is 4222315122.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 22151322240.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5766654 + ... + 5770493.

Almost surely, 2^22151322240 is an apocalyptic number.

22151322240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22151322240 is an abundant number, since it is smaller than the sum of its proper divisors (48456023520).

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

22151322240 is a wasteful number, since it uses less digits than its factorization.

22151322240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11537169 (or 11537157 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

Adding to 22151322240 its reverse (4222315122), we get a palindrome (26373637362).

The spelling of 22151322240 in words is "twenty-two billion, one hundred fifty-one million, three hundred twenty-two thousand, two hundred forty".