213312001123 has 4 divisors (see below), whose sum is σ = 229720616608. Its totient is φ = 196903385640.

The previous prime is 213312001081. The next prime is 213312001139. The reversal of 213312001123 is 321100213312.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 213312001123 - 2³³ = 204722066531 is a prime.

It is a super-2 number, since 2×213312001123² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 213312001123.

It is not an unprimeable number, because it can be changed into a prime (213312001223) 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, 8204307723 + ... + 8204307748.

It is an arithmetic number, because the mean of its divisors is an integer number (57430154152).

Almost surely, 2^213312001123 is an apocalyptic number.

213312001123 is a deficient number, since it is larger than the sum of its proper divisors (16408615485).

213312001123 is a wasteful number, since it uses less digits than its factorization.

213312001123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16408615484.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 213312001123 its reverse (321100213312), we get a palindrome (534412214435).

The spelling of 213312001123 in words is "two hundred thirteen billion, three hundred twelve million, one thousand, one hundred twenty-three".