212220212100 has 108 divisors (see below), whose sum is σ = 664889850576. Its totient is φ = 52238808960.

The previous prime is 212220212077. The next prime is 212220212129. The reversal of 212220212100 is 1212022212.

212220212100 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 212220212100.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 2042202 + ... + 2143601.

Almost surely, 2^212220212100 is an apocalyptic number.

212220212100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212220212100 is an abundant number, since it is smaller than the sum of its proper divisors (452669638476).

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

212220212100 is a wasteful number, since it uses less digits than its factorization.

212220212100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4185846 (or 4185826 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 212220212100 its reverse (1212022212), we get a palindrome (213432234312).

The spelling of 212220212100 in words is "two hundred twelve billion, two hundred twenty million, two hundred twelve thousand, one hundred".