213123200221231 has 32 divisors (see below), whose sum is σ = 231371580211200. Its totient is φ = 195528490375680.

The previous prime is 213123200221157. The next prime is 213123200221247. The reversal of 213123200221231 is 132122002321312.

It is a cyclic number.

It is not a de Polignac number, because 213123200221231 - 2²¹ = 213123198124079 is a prime.

It is a super-2 number, since 2×213123200221231² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 213123200221196 and 213123200221205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213123200221291) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 985118290 + ... + 985334608.

It is an arithmetic number, because the mean of its divisors is an integer number (7230361881600).

Almost surely, 2^{213123200221231} is an apocalyptic number.

213123200221231 is a deficient number, since it is larger than the sum of its proper divisors (18248379989969).

213123200221231 is a wasteful number, since it uses less digits than its factorization.

213123200221231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219079.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 213123200221231 its reverse (132122002321312), we get a palindrome (345245202542543).

The spelling of 213123200221231 in words is "two hundred thirteen trillion, one hundred twenty-three billion, two hundred million, two hundred twenty-one thousand, two hundred thirty-one".