212323131132233 has 4 divisors (see below), whose sum is σ = 231625233962448. Its totient is φ = 193021028302020.

The previous prime is 212323131132227. The next prime is 212323131132263. The reversal of 212323131132233 is 332231131323212.

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 a de Polignac number, because none of the positive numbers 2^k-212323131132233 is a prime.

It is a super-2 number, since 2×212323131132233² (a number of 29 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 212323131132233.

It is not an unprimeable number, because it can be changed into a prime (212323131132263) 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, 9651051415091 + ... + 9651051415112.

It is an arithmetic number, because the mean of its divisors is an integer number (57906308490612).

Almost surely, 2^{212323131132233} is an apocalyptic number.

It is an amenable number.

212323131132233 is a deficient number, since it is larger than the sum of its proper divisors (19302102830215).

212323131132233 is a wasteful number, since it uses less digits than its factorization.

212323131132233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19302102830214.

The product of its digits is 23328, while the sum is 32.

Adding to 212323131132233 its reverse (332231131323212), we get a palindrome (544554262455445).

The spelling of 212323131132233 in words is "two hundred twelve trillion, three hundred twenty-three billion, one hundred thirty-one million, one hundred thirty-two thousand, two hundred thirty-three".