212232120220 has 48 divisors (see below), whose sum is σ = 453378199680. Its totient is φ = 83428812864.

The previous prime is 212232120197. The next prime is 212232120283. The reversal of 212232120220 is 22021232212.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4160107 + ... + 4210813.

It is an arithmetic number, because the mean of its divisors is an integer number (9445379160).

Almost surely, 2^212232120220 is an apocalyptic number.

212232120220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212232120220 is an abundant number, since it is smaller than the sum of its proper divisors (241146079460).

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

212232120220 is a wasteful number, since it uses less digits than its factorization.

212232120220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54322 (or 54320 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 212232120220 its reverse (22021232212), we get a palindrome (234253352432).

The spelling of 212232120220 in words is "two hundred twelve billion, two hundred thirty-two million, one hundred twenty thousand, two hundred twenty".