22200100012221 has 32 divisors (see below), whose sum is σ = 32191455340800. Its totient is φ = 13551707483136.

The previous prime is 22200100012213. The next prime is 22200100012267. The reversal of 22200100012221 is 12221000100222.

It is not a de Polignac number, because 22200100012221 - 2³ = 22200100012213 is a prime.

It is a super-2 number, since 2×22200100012221² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 22200100012221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22200100012271) 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, 19383255 + ... + 20496603.

It is an arithmetic number, because the mean of its divisors is an integer number (1005982979400).

Almost surely, 2^{22200100012221} is an apocalyptic number.

It is an amenable number.

22200100012221 is a deficient number, since it is larger than the sum of its proper divisors (9991355328579).

22200100012221 is a wasteful number, since it uses less digits than its factorization.

22200100012221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1123973.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 22200100012221 its reverse (12221000100222), we get a palindrome (34421100112443).

The spelling of 22200100012221 in words is "twenty-two trillion, two hundred billion, one hundred million, twelve thousand, two hundred twenty-one".