231211122101 has 8 divisors (see below), whose sum is σ = 237015072000. Its totient is φ = 225415012960.

The previous prime is 231211122071. The next prime is 231211122127. The reversal of 231211122101 is 101221112132.

It is a happy number.

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 231211122101 - 2¹⁴ = 231211105717 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 231211122101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231211122001) 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, 1900451 + ... + 2018448.

It is an arithmetic number, because the mean of its divisors is an integer number (29626884000).

Almost surely, 2^231211122101 is an apocalyptic number.

It is an amenable number.

231211122101 is a deficient number, since it is larger than the sum of its proper divisors (5803949899).

231211122101 is a wasteful number, since it uses less digits than its factorization.

231211122101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3920379.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 231211122101 its reverse (101221112132), we get a palindrome (332432234233).

The spelling of 231211122101 in words is "two hundred thirty-one billion, two hundred eleven million, one hundred twenty-two thousand, one hundred one".