212323122013 has 4 divisors (see below), whose sum is σ = 213130434528. Its totient is φ = 211515809500.

The previous prime is 212323121963. The next prime is 212323122023. The reversal of 212323122013 is 310221323212.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 212323122013 - 2¹⁷ = 212322990941 is a prime.

It is a super-2 number, since 2×212323122013² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212323122023) 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, 403655863 + ... + 403656388.

It is an arithmetic number, because the mean of its divisors is an integer number (53282608632).

Almost surely, 2^212323122013 is an apocalyptic number.

It is an amenable number.

212323122013 is a deficient number, since it is larger than the sum of its proper divisors (807312515).

212323122013 is an equidigital number, since it uses as much as digits as its factorization.

212323122013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 807312514.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 212323122013 its reverse (310221323212), we get a palindrome (522544445225).

The spelling of 212323122013 in words is "two hundred twelve billion, three hundred twenty-three million, one hundred twenty-two thousand, thirteen".