233121213213 has 32 divisors (see below), whose sum is σ = 361425057792. Its totient is φ = 130894315200.

The previous prime is 233121213187. The next prime is 233121213239. The reversal of 233121213213 is 312312121332.

It is an interprime number because it is at equal distance from previous prime (233121213187) and next prime (233121213239).

It is not a de Polignac number, because 233121213213 - 2⁵ = 233121213181 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (233121213263) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1166658 + ... + 1351788.

It is an arithmetic number, because the mean of its divisors is an integer number (11294533056).

Almost surely, 2^233121213213 is an apocalyptic number.

It is an amenable number.

233121213213 is a deficient number, since it is larger than the sum of its proper divisors (128303844579).

233121213213 is a wasteful number, since it uses less digits than its factorization.

233121213213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186185.

The product of its digits is 1296, while the sum is 24.

Adding to 233121213213 its reverse (312312121332), we get a palindrome (545433334545).

The spelling of 233121213213 in words is "two hundred thirty-three billion, one hundred twenty-one million, two hundred thirteen thousand, two hundred thirteen".