213112210023 has 12 divisors (see below), whose sum is σ = 307941088728. Its totient is φ = 142022957040.

The previous prime is 213112209991. The next prime is 213112210079. The reversal of 213112210023 is 320012211312.

It is not a de Polignac number, because 213112210023 - 2⁵ = 213112209991 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 213112209978 and 213112210005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213112210093) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4294765 + ... + 4344102.

It is an arithmetic number, because the mean of its divisors is an integer number (25661757394).

Almost surely, 2^213112210023 is an apocalyptic number.

213112210023 is a deficient number, since it is larger than the sum of its proper divisors (94828878705).

213112210023 is a wasteful number, since it uses less digits than its factorization.

213112210023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8641614 (or 8641611 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 213112210023 its reverse (320012211312), we get a palindrome (533124421335).

The spelling of 213112210023 in words is "two hundred thirteen billion, one hundred twelve million, two hundred ten thousand, twenty-three".