213012116233 has 4 divisors (see below), whose sum is σ = 243442418560. Its totient is φ = 182581813908.

The previous prime is 213012116231. The next prime is 213012116329. The reversal of 213012116233 is 332611210312.

It is a happy number.

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 213012116233 - 2¹ = 213012116231 is a prime.

It is a super-2 number, since 2×213012116233² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 213012116198 and 213012116207.

It is not an unprimeable number, because it can be changed into a prime (213012116231) 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, 15215151153 + ... + 15215151166.

It is an arithmetic number, because the mean of its divisors is an integer number (60860604640).

Almost surely, 2^213012116233 is an apocalyptic number.

It is an amenable number.

213012116233 is a deficient number, since it is larger than the sum of its proper divisors (30430302327).

213012116233 is an equidigital number, since it uses as much as digits as its factorization.

213012116233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30430302326.

The product of its (nonzero) digits is 1296, while the sum is 25.

Adding to 213012116233 its reverse (332611210312), we get a palindrome (545623326545).

The spelling of 213012116233 in words is "two hundred thirteen billion, twelve million, one hundred sixteen thousand, two hundred thirty-three".