22215054400 has 168 divisors, whose sum is σ = 68151548736. Its totient is φ = 6924134400.

The previous prime is 22215054397. The next prime is 22215054403. The reversal of 22215054400 is 445051222.

It is an interprime number because it is at equal distance from previous prime (22215054397) and next prime (22215054403).

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (22215054403) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 33042 + ... + 213358.

Almost surely, 2^22215054400 is an apocalyptic number.

22215054400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22215054400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34075774368).

22215054400 is an abundant number, since it is smaller than the sum of its proper divisors (45936494336).

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

22215054400 is a wasteful number, since it uses less digits than its factorization.

22215054400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180357 (or 180342 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 25.

The spelling of 22215054400 in words is "twenty-two billion, two hundred fifteen million, fifty-four thousand, four hundred".