22100212222100 has 36 divisors (see below), whose sum is σ = 47957919363900. Its totient is φ = 8840000309760.

The previous prime is 22100212222069. The next prime is 22100212222133. The reversal of 22100212222100 is 122221200122.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 295627088656 + 21804585133444 = 543716^2 + 4669538^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10024796 + ... + 12029004.

It is an arithmetic number, because the mean of its divisors is an integer number (1332164426775).

Almost surely, 2^{22100212222100} is an apocalyptic number.

22100212222100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22100212222100 is an abundant number, since it is smaller than the sum of its proper divisors (25857707141800).

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

22100212222100 is a wasteful number, since it uses less digits than its factorization.

22100212222100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2114492 (or 2114485 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 22100212222100 its reverse (122221200122), we get a palindrome (22222433422222).

The spelling of 22100212222100 in words is "twenty-two trillion, one hundred billion, two hundred twelve million, two hundred twenty-two thousand, one hundred".