213232111220 has 24 divisors (see below), whose sum is σ = 455377053600. Its totient is φ = 83847202592.

The previous prime is 213232111219. The next prime is 213232111247. The reversal of 213232111220 is 22111232312.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 213232111192 and 213232111201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90351410 + ... + 90353769.

It is an arithmetic number, because the mean of its divisors is an integer number (18974043900).

Almost surely, 2^213232111220 is an apocalyptic number.

213232111220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213232111220 is an abundant number, since it is smaller than the sum of its proper divisors (242144942380).

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

213232111220 is a wasteful number, since it uses less digits than its factorization.

213232111220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180705247 (or 180705245 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 213232111220 its reverse (22111232312), we get a palindrome (235343343532).

The spelling of 213232111220 in words is "two hundred thirteen billion, two hundred thirty-two million, one hundred eleven thousand, two hundred twenty".