22121756600 has 48 divisors (see below), whose sum is σ = 54458568000. Its totient is φ = 8328189440.

The previous prime is 22121756491. The next prime is 22121756603. The reversal of 22121756600 is 665712122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22121756603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3249800 + ... + 3256599.

It is an arithmetic number, because the mean of its divisors is an integer number (1134553500).

Almost surely, 2^22121756600 is an apocalyptic number.

22121756600 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22121756600 is an abundant number, since it is smaller than the sum of its proper divisors (32336811400).

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

22121756600 is a wasteful number, since it uses less digits than its factorization.

22121756600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6506432 (or 6506423 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 32.

The spelling of 22121756600 in words is "twenty-two billion, one hundred twenty-one million, seven hundred fifty-six thousand, six hundred".