213132310220 has 24 divisors (see below), whose sum is σ = 447677878704. Its totient is φ = 85233871296.

The previous prime is 213132310177. The next prime is 213132310231. The reversal of 213132310220 is 22013231312.

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 = 213132310192 and 213132310201.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1098899 + ... + 1278218.

It is an arithmetic number, because the mean of its divisors is an integer number (18653244946).

Almost surely, 2^213132310220 is an apocalyptic number.

213132310220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213132310220 is an abundant number, since it is smaller than the sum of its proper divisors (234545568484).

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

213132310220 is a wasteful number, since it uses less digits than its factorization.

213132310220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2381609 (or 2381607 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 213132310220 its reverse (22013231312), we get a palindrome (235145541532).

The spelling of 213132310220 in words is "two hundred thirteen billion, one hundred thirty-two million, three hundred ten thousand, two hundred twenty".