121240230231 has 16 divisors (see below), whose sum is σ = 170175911040. Its totient is φ = 76566394080.

The previous prime is 121240230187. The next prime is 121240230253. The reversal of 121240230231 is 132032042121.

It is not a de Polignac number, because 121240230231 - 2¹⁰ = 121240229207 is a prime.

It is a super-2 number, since 2×121240230231² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 121240230198 and 121240230207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121240230731) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 655456 + ... + 819818.

It is an arithmetic number, because the mean of its divisors is an integer number (10635994440).

Almost surely, 2^121240230231 is an apocalyptic number.

121240230231 is a deficient number, since it is larger than the sum of its proper divisors (48935680809).

121240230231 is a wasteful number, since it uses less digits than its factorization.

121240230231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177326.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 121240230231 its reverse (132032042121), we get a palindrome (253272272352).

The spelling of 121240230231 in words is "one hundred twenty-one billion, two hundred forty million, two hundred thirty thousand, two hundred thirty-one".