22121313000 has 64 divisors (see below), whose sum is σ = 69018505920. Its totient is φ = 5899016000.

The previous prime is 22121312959. The next prime is 22121313007. The reversal of 22121313000 is 31312122.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (22121313007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3683886 + ... + 3689885.

It is an arithmetic number, because the mean of its divisors is an integer number (1078414155).

Almost surely, 2^22121313000 is an apocalyptic number.

22121313000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22121313000 is an abundant number, since it is smaller than the sum of its proper divisors (46897192920).

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

22121313000 is a wasteful number, since it uses less digits than its factorization.

22121313000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7373795 (or 7373781 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 22121313000 its reverse (31312122), we get a palindrome (22152625122).

The spelling of 22121313000 in words is "twenty-two billion, one hundred twenty-one million, three hundred thirteen thousand".