22211212021100 has 72 divisors (see below), whose sum is σ = 48248808753600. Its totient is φ = 8875184915520.

The previous prime is 22211212020983. The next prime is 22211212021147. The reversal of 22211212021100 is 112021211222.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 385134467 + ... + 385192133.

It is an arithmetic number, because the mean of its divisors is an integer number (670122343800).

Almost surely, 2^{22211212021100} is an apocalyptic number.

22211212021100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22211212021100 is an abundant number, since it is smaller than the sum of its proper divisors (26037596732500).

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

22211212021100 is a wasteful number, since it uses less digits than its factorization.

22211212021100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61647 (or 61640 counting only the distinct ones).

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

Adding to 22211212021100 its reverse (112021211222), we get a palindrome (22323233232322).

The spelling of 22211212021100 in words is "twenty-two trillion, two hundred eleven billion, two hundred twelve million, twenty-one thousand, one hundred".