212101132220 has 48 divisors (see below), whose sum is σ = 450829628928. Its totient is φ = 83814834240.

The previous prime is 212101132171. The next prime is 212101132249. The reversal of 212101132220 is 22231101212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 349625 + ... + 739215.

It is an arithmetic number, because the mean of its divisors is an integer number (9392283936).

Almost surely, 2^212101132220 is an apocalyptic number.

212101132220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212101132220 is an abundant number, since it is smaller than the sum of its proper divisors (238728496708).

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

212101132220 is a wasteful number, since it uses less digits than its factorization.

212101132220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 389930 (or 389928 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 212101132220 its reverse (22231101212), we get a palindrome (234332233432).

The spelling of 212101132220 in words is "two hundred twelve billion, one hundred one million, one hundred thirty-two thousand, two hundred twenty".