213000121231 has 8 divisors (see below), whose sum is σ = 217741455360. Its totient is φ = 208267512888.

The previous prime is 213000121223. The next prime is 213000121241. The reversal of 213000121231 is 132121000312.

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 213000121231 - 2³ = 213000121223 is a prime.

It is a super-2 number, since 2×213000121231² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213000121211) 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, 2132071 + ... + 2229736.

It is an arithmetic number, because the mean of its divisors is an integer number (27217681920).

Almost surely, 2^213000121231 is an apocalyptic number.

213000121231 is a deficient number, since it is larger than the sum of its proper divisors (4741334129).

213000121231 is a wasteful number, since it uses less digits than its factorization.

213000121231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4362893.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 213000121231 its reverse (132121000312), we get a palindrome (345121121543).

The spelling of 213000121231 in words is "two hundred thirteen billion, one hundred twenty-one thousand, two hundred thirty-one".