213131121021233 has 8 divisors (see below), whose sum is σ = 217163946813696. Its totient is φ = 209098720558000.

The previous prime is 213131121021157. The next prime is 213131121021253. The reversal of 213131121021233 is 332120121131312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 213131121021233 - 2¹⁴ = 213131121004849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213131121021253) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 105320543 + ... + 107325108.

It is an arithmetic number, because the mean of its divisors is an integer number (27145493351712).

Almost surely, 2^{213131121021233} is an apocalyptic number.

It is an amenable number.

213131121021233 is a deficient number, since it is larger than the sum of its proper divisors (4032825792463).

213131121021233 is a wasteful number, since it uses less digits than its factorization.

213131121021233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212664615.

The product of its (nonzero) digits is 1296, while the sum is 26.

Adding to 213131121021233 its reverse (332120121131312), we get a palindrome (545251242152545).

The spelling of 213131121021233 in words is "two hundred thirteen trillion, one hundred thirty-one billion, one hundred twenty-one million, twenty-one thousand, two hundred thirty-three".