231000111121201 has 4 divisors (see below), whose sum is σ = 231194719472112. Its totient is φ = 230805502770292.

The previous prime is 231000111121189. The next prime is 231000111121229. The reversal of 231000111121201 is 102121111000132.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 231000111121201 - 2⁹ = 231000111120689 is a prime.

It is a super-3 number, since 3×231000111121201³ (a number of 44 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231000111121001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 97304173675 + ... + 97304176048.

It is an arithmetic number, because the mean of its divisors is an integer number (57798679868028).

Almost surely, 2^{231000111121201} is an apocalyptic number.

It is an amenable number.

231000111121201 is a deficient number, since it is larger than the sum of its proper divisors (194608350911).

231000111121201 is a wasteful number, since it uses less digits than its factorization.

231000111121201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194608350910.

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 231000111121201 its reverse (102121111000132), we get a palindrome (333121222121333).

The spelling of 231000111121201 in words is "two hundred thirty-one trillion, one hundred eleven million, one hundred twenty-one thousand, two hundred one".