22121001121000 has 64 divisors (see below), whose sum is σ = 51767692966080. Its totient is φ = 8847622612800.

The previous prime is 22121001120989. The next prime is 22121001121001. The reversal of 22121001121000 is 12110012122.

It is not an unprimeable number, because it can be changed into a prime (22121001121001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10476427 + ... + 12409573.

It is an arithmetic number, because the mean of its divisors is an integer number (808870202595).

Almost surely, 2^{22121001121000} is an apocalyptic number.

22121001121000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22121001121000 is an abundant number, since it is smaller than the sum of its proper divisors (29646691845080).

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

22121001121000 is a wasteful number, since it uses less digits than its factorization.

22121001121000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1944611 (or 1944597 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 22121001121000 its reverse (12110012122), we get a palindrome (22133111133122).

The spelling of 22121001121000 in words is "twenty-two trillion, one hundred twenty-one billion, one million, one hundred twenty-one thousand".