22121311300 has 72 divisors (see below), whose sum is σ = 53585132832. Its totient is φ = 7857024000.

The previous prime is 22121311213. The next prime is 22121311301. The reversal of 22121311300 is 311312122.

It is not an unprimeable number, because it can be changed into a prime (22121311301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 186541 + ... + 281140.

It is an arithmetic number, because the mean of its divisors is an integer number (744237956).

Almost surely, 2^22121311300 is an apocalyptic number.

22121311300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22121311300 is an abundant number, since it is smaller than the sum of its proper divisors (31463821532).

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

22121311300 is a wasteful number, since it uses less digits than its factorization.

22121311300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 467749 (or 467742 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 22121311300 its reverse (311312122), we get a palindrome (22432623422).

The spelling of 22121311300 in words is "twenty-two billion, one hundred twenty-one million, three hundred eleven thousand, three hundred".