212222000100 has 72 divisors (see below), whose sum is σ = 669849814368. Its totient is φ = 51447756800.

The previous prime is 212222000057. The next prime is 212222000129. The reversal of 212222000100 is 1000222212.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 32151549 + ... + 32158148.

It is an arithmetic number, because the mean of its divisors is an integer number (9303469644).

Almost surely, 2^212222000100 is an apocalyptic number.

212222000100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212222000100 is an abundant number, since it is smaller than the sum of its proper divisors (457627814268).

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

212222000100 is a wasteful number, since it uses less digits than its factorization.

212222000100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64309725 (or 64309718 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 212222000100 its reverse (1000222212), we get a palindrome (213222222312).

The spelling of 212222000100 in words is "two hundred twelve billion, two hundred twenty-two million, one hundred", and thus it is an aban number.