22011002121000 has 128 divisors (see below), whose sum is σ = 69615071510400. Its totient is φ = 5789195020800.

The previous prime is 22011002120977. The next prime is 22011002121001. The reversal of 22011002121000 is 12120011022.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is not an unprimeable number, because it can be changed into a prime (22011002121001) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 50034430 + ... + 50472429.

It is an arithmetic number, because the mean of its divisors is an integer number (543867746175).

Almost surely, 2^{22011002121000} is an apocalyptic number.

22011002121000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22011002121000 is an abundant number, since it is smaller than the sum of its proper divisors (47604069389400).

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

22011002121000 is a wasteful number, since it uses less digits than its factorization.

22011002121000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100506956 (or 100506942 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 22011002121000 its reverse (12120011022), we get a palindrome (22023122132022).

The spelling of 22011002121000 in words is "twenty-two trillion, eleven billion, two million, one hundred twenty-one thousand".