231133202111121 has 4 divisors (see below), whose sum is σ = 308177602814832. Its totient is φ = 154088801407412.

The previous prime is 231133202111113. The next prime is 231133202111129. The reversal of 231133202111121 is 121111202331132.

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 an interprime number because it is at equal distance from previous prime (231133202111113) and next prime (231133202111129).

It is a cyclic number.

It is not a de Polignac number, because 231133202111121 - 2³ = 231133202111113 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 231133202111091 and 231133202111100.

It is not an unprimeable number, because it can be changed into a prime (231133202111129) 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, 38522200351851 + ... + 38522200351856.

It is an arithmetic number, because the mean of its divisors is an integer number (77044400703708).

Almost surely, 2^{231133202111121} is an apocalyptic number.

It is an amenable number.

231133202111121 is a deficient number, since it is larger than the sum of its proper divisors (77044400703711).

231133202111121 is an equidigital number, since it uses as much as digits as its factorization.

231133202111121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77044400703710.

The product of its (nonzero) digits is 432, while the sum is 24.

Adding to 231133202111121 its reverse (121111202331132), we get a palindrome (352244404442253).

The spelling of 231133202111121 in words is "two hundred thirty-one trillion, one hundred thirty-three billion, two hundred two million, one hundred eleven thousand, one hundred twenty-one".