22011122212100 has 72 divisors (see below), whose sum is σ = 54622069463808. Its totient is φ = 7541902771200.

The previous prime is 22011122212097. The next prime is 22011122212103. The reversal of 22011122212100 is 121222111022.

It is an interprime number because it is at equal distance from previous prime (22011122212097) and next prime (22011122212103).

It is not an unprimeable number, because it can be changed into a prime (22011122212103) 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, 8823821 + ... + 11040020.

It is an arithmetic number, because the mean of its divisors is an integer number (758639853664).

Almost surely, 2^{22011122212100} is an apocalyptic number.

22011122212100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22011122212100 is an abundant number, since it is smaller than the sum of its proper divisors (32610947251708).

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

22011122212100 is a wasteful number, since it uses less digits than its factorization.

22011122212100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19865445 (or 19865438 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 22011122212100 its reverse (121222111022), we get a palindrome (22132344323122).

The spelling of 22011122212100 in words is "twenty-two trillion, eleven billion, one hundred twenty-two million, two hundred twelve thousand, one hundred".