121023103231 has 4 divisors (see below), whose sum is σ = 121265635000. Its totient is φ = 120780571464.

The previous prime is 121023103177. The next prime is 121023103259. The reversal of 121023103231 is 132301320121.

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 121023103231 - 2⁹ = 121023102719 is a prime.

It is a super-2 number, since 2×121023103231² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121023103199 and 121023103208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121023101231) 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, 121265136 + ... + 121266133.

It is an arithmetic number, because the mean of its divisors is an integer number (30316408750).

Almost surely, 2^121023103231 is an apocalyptic number.

121023103231 is a deficient number, since it is larger than the sum of its proper divisors (242531769).

121023103231 is an equidigital number, since it uses as much as digits as its factorization.

121023103231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242531768.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 121023103231 its reverse (132301320121), we get a palindrome (253324423352).

The spelling of 121023103231 in words is "one hundred twenty-one billion, twenty-three million, one hundred three thousand, two hundred thirty-one".