213113120223 has 4 divisors (see below), whose sum is σ = 284150826968. Its totient is φ = 142075413480.

The previous prime is 213113120219. The next prime is 213113120243. The reversal of 213113120223 is 322021311312.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 213113120223 - 2² = 213113120219 is a prime.

It is a super-2 number, since 2×213113120223² (a number of 23 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 213113120223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213113120243) 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, 35518853368 + ... + 35518853373.

It is an arithmetic number, because the mean of its divisors is an integer number (71037706742).

Almost surely, 2^213113120223 is an apocalyptic number.

213113120223 is a deficient number, since it is larger than the sum of its proper divisors (71037706745).

213113120223 is an equidigital number, since it uses as much as digits as its factorization.

213113120223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71037706744.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 213113120223 its reverse (322021311312), we get a palindrome (535134431535).

It can be divided in two parts, 213113 and 120223, that added together give a triangular number (333336 = T₈₁₆).

The spelling of 213113120223 in words is "two hundred thirteen billion, one hundred thirteen million, one hundred twenty thousand, two hundred twenty-three".