213112021023 has 24 divisors (see below), whose sum is σ = 335862633600. Its totient is φ = 129139665360.

The previous prime is 213112020997. The next prime is 213112021069. The reversal of 213112021023 is 320120211312.

It is not a de Polignac number, because 213112021023 - 2¹⁰ = 213112019999 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 213112020987 and 213112021005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213112021523) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 526990 + ... + 839012.

It is an arithmetic number, because the mean of its divisors is an integer number (13994276400).

Almost surely, 2^213112021023 is an apocalyptic number.

213112021023 is a deficient number, since it is larger than the sum of its proper divisors (122750612577).

213112021023 is a wasteful number, since it uses less digits than its factorization.

213112021023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318939 (or 318936 counting only the distinct ones).

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

Adding to 213112021023 its reverse (320120211312), we get a palindrome (533232232335).

The spelling of 213112021023 in words is "two hundred thirteen billion, one hundred twelve million, twenty-one thousand, twenty-three".