212113032220 has 12 divisors (see below), whose sum is σ = 445437367704. Its totient is φ = 84845212880.

The previous prime is 212113032169. The next prime is 212113032223. The reversal of 212113032220 is 22230311212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212113032223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5302825786 + ... + 5302825825.

It is an arithmetic number, because the mean of its divisors is an integer number (37119780642).

Almost surely, 2^212113032220 is an apocalyptic number.

212113032220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212113032220 is an abundant number, since it is smaller than the sum of its proper divisors (233324335484).

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

212113032220 is a wasteful number, since it uses less digits than its factorization.

212113032220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10605651620 (or 10605651618 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 212113032220 its reverse (22230311212), we get a palindrome (234343343432).

The spelling of 212113032220 in words is "two hundred twelve billion, one hundred thirteen million, thirty-two thousand, two hundred twenty".