22155030400 has 96 divisors (see below), whose sum is σ = 56495580480. Its totient is φ = 8576102400.

The previous prime is 22155030397. The next prime is 22155030419. The reversal of 22155030400 is 403055122.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12469 + ... + 210868.

It is an arithmetic number, because the mean of its divisors is an integer number (588495630).

Almost surely, 2^22155030400 is an apocalyptic number.

22155030400 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 22155030400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28247790240).

22155030400 is an abundant number, since it is smaller than the sum of its proper divisors (34340550080).

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

22155030400 is a wasteful number, since it uses less digits than its factorization.

22155030400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223392 (or 223375 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

Adding to 22155030400 its reverse (403055122), we get a palindrome (22558085522).

The spelling of 22155030400 in words is "twenty-two billion, one hundred fifty-five million, thirty thousand, four hundred".