22200121002 has 16 divisors (see below), whose sum is σ = 44426031840. Its totient is φ = 7395742032.

The previous prime is 22200121001. The next prime is 22200121033. The reversal of 22200121002 is 20012100222.

It is not an unprimeable number, because it can be changed into a prime (22200121001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1063377 + ... + 1084052.

It is an arithmetic number, because the mean of its divisors is an integer number (2776626990).

Almost surely, 2^22200121002 is an apocalyptic number.

22200121002 is an abundant number, since it is smaller than the sum of its proper divisors (22225910838).

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

22200121002 is a wasteful number, since it uses less digits than its factorization.

22200121002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2149157.

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 22200121002 its reverse (20012100222), we get a palindrome (42212221224).

It can be divided in two parts, 22 and 200121002, that multiplied together give a palindrome (4402662044).

The spelling of 22200121002 in words is "twenty-two billion, two hundred million, one hundred twenty-one thousand, two".