213212120113231 has 8 divisors (see below), whose sum is σ = 213941493277920. Its totient is φ = 212483104054368.

The previous prime is 213212120113229. The next prime is 213212120113313. The reversal of 213212120113231 is 132311021212312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 213212120113231 - 2¹ = 213212120113229 is a prime.

It is a super-2 number, since 2×213212120113231² (a number of 29 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 = 213212120113196 and 213212120113205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213212120213231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 88080276 + ... + 90468553.

It is an arithmetic number, because the mean of its divisors is an integer number (26742686659740).

Almost surely, 2^{213212120113231} is an apocalyptic number.

213212120113231 is a deficient number, since it is larger than the sum of its proper divisors (729373164689).

213212120113231 is a wasteful number, since it uses less digits than its factorization.

213212120113231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178552913.

The product of its (nonzero) digits is 864, while the sum is 25.

Adding to 213212120113231 its reverse (132311021212312), we get a palindrome (345523141325543).

The spelling of 213212120113231 in words is "two hundred thirteen trillion, two hundred twelve billion, one hundred twenty million, one hundred thirteen thousand, two hundred thirty-one".