213223231122 has 32 divisors (see below), whose sum is σ = 465640890624. Its totient is φ = 64553854800.

The previous prime is 213223231103. The next prime is 213223231127. The reversal of 213223231122 is 221132322312.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 213223231092 and 213223231101.

It is not an unprimeable number, because it can be changed into a prime (213223231127) 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, 1408588 + ... + 1552599.

It is an arithmetic number, because the mean of its divisors is an integer number (14551277832).

Almost surely, 2^213223231122 is an apocalyptic number.

213223231122 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

213223231122 is an abundant number, since it is smaller than the sum of its proper divisors (252417659502).

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

213223231122 is a wasteful number, since it uses less digits than its factorization.

213223231122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2962294.

The product of its digits is 1728, while the sum is 24.

Adding to 213223231122 its reverse (221132322312), we get a palindrome (434355553434).

The spelling of 213223231122 in words is "two hundred thirteen billion, two hundred twenty-three million, two hundred thirty-one thousand, one hundred twenty-two".