213130122312 has 64 divisors (see below), whose sum is σ = 547671193920. Its totient is φ = 69067047168.

The previous prime is 213130122277. The next prime is 213130122319. The reversal of 213130122312 is 213221031312.

It is not an unprimeable number, because it can be changed into a prime (213130122319) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1001443 + ... + 1195469.

It is an arithmetic number, because the mean of its divisors is an integer number (8557362405).

Almost surely, 2^213130122312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 213130122312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (273835596960).

213130122312 is an abundant number, since it is smaller than the sum of its proper divisors (334541071608).

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

213130122312 is a wasteful number, since it uses less digits than its factorization.

213130122312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195310 (or 195306 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 213130122312 its reverse (213221031312), we get a palindrome (426351153624).

The spelling of 213130122312 in words is "two hundred thirteen billion, one hundred thirty million, one hundred twenty-two thousand, three hundred twelve".