22121001121002 has 64 divisors (see below), whose sum is σ = 50594650997760. Its totient is φ = 6316242038784.

The previous prime is 22121001121001. The next prime is 22121001121007. The reversal of 22121001121002 is 20012110012122.

It is not an unprimeable number, because it can be changed into a prime (22121001121001) 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, 447687274 + ... + 447736682.

It is an arithmetic number, because the mean of its divisors is an integer number (790541421840).

Almost surely, 2^{22121001121002} is an apocalyptic number.

22121001121002 is an abundant number, since it is smaller than the sum of its proper divisors (28473649876758).

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

22121001121002 is a wasteful number, since it uses less digits than its factorization.

22121001121002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56027.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 22121001121002 its reverse (20012110012122), we get a palindrome (42133111133124).

The spelling of 22121001121002 in words is "twenty-two trillion, one hundred twenty-one billion, one million, one hundred twenty-one thousand, two".