121241025231 has 4 divisors (see below), whose sum is σ = 161654700312. Its totient is φ = 80827350152.

The previous prime is 121241025197. The next prime is 121241025253. The reversal of 121241025231 is 132520142121.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 121241025231 - 2⁹ = 121241024719 is a prime.

It is a super-2 number, since 2×121241025231² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121241025431) 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, 20206837536 + ... + 20206837541.

It is an arithmetic number, because the mean of its divisors is an integer number (40413675078).

Almost surely, 2^121241025231 is an apocalyptic number.

121241025231 is a deficient number, since it is larger than the sum of its proper divisors (40413675081).

121241025231 is an equidigital number, since it uses as much as digits as its factorization.

121241025231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40413675080.

The product of its (nonzero) digits is 960, while the sum is 24.

Adding to 121241025231 its reverse (132520142121), we get a palindrome (253761167352).

The spelling of 121241025231 in words is "one hundred twenty-one billion, two hundred forty-one million, twenty-five thousand, two hundred thirty-one".