121112503231 has 4 divisors (see below), whose sum is σ = 121113543600. Its totient is φ = 121111462864.

The previous prime is 121112503223. The next prime is 121112503243. The reversal of 121112503231 is 132305211121.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 132305211121 = 1621 ⋅81619501.

It is a cyclic number.

It is not a de Polignac number, because 121112503231 - 2³ = 121112503223 is a prime.

It is a super-2 number, since 2×121112503231² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121112503261) 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, 319846 + ... + 586963.

It is an arithmetic number, because the mean of its divisors is an integer number (30278385900).

Almost surely, 2^121112503231 is an apocalyptic number.

121112503231 is a deficient number, since it is larger than the sum of its proper divisors (1040369).

121112503231 is an equidigital number, since it uses as much as digits as its factorization.

121112503231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1040368.

The product of its (nonzero) digits is 360, while the sum is 22.

Adding to 121112503231 its reverse (132305211121), we get a palindrome (253417714352).

The spelling of 121112503231 in words is "one hundred twenty-one billion, one hundred twelve million, five hundred three thousand, two hundred thirty-one".