22201121102100 has 72 divisors (see below), whose sum is σ = 64956988111680. Its totient is φ = 5853778740480.

The previous prime is 22201121102093. The next prime is 22201121102101. The reversal of 22201121102100 is 120112110222.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 22201121102100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22201121102101) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 415724632 + ... + 415778031.

It is an arithmetic number, because the mean of its divisors is an integer number (902180390440).

Almost surely, 2^{22201121102100} is an apocalyptic number.

22201121102100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22201121102100 is an abundant number, since it is smaller than the sum of its proper divisors (42755867009580).

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

22201121102100 is a wasteful number, since it uses less digits than its factorization.

22201121102100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 831502769 (or 831502762 counting only the distinct ones).

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

Adding to 22201121102100 its reverse (120112110222), we get a palindrome (22321233212322).

The spelling of 22201121102100 in words is "twenty-two trillion, two hundred one billion, one hundred twenty-one million, one hundred two thousand, one hundred".