121112331231 has 8 divisors (see below), whose sum is σ = 162473802880. Its totient is φ = 80246206872.

The previous prime is 121112331227. The next prime is 121112331253. The reversal of 121112331231 is 132133211121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 121112331231 - 2² = 121112331227 is a prime.

It is a super-2 number, since 2×121112331231² (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 = 121112331198 and 121112331207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121112330231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 123836251 + ... + 123837228.

It is an arithmetic number, because the mean of its divisors is an integer number (20309225360).

Almost surely, 2^121112331231 is an apocalyptic number.

121112331231 is a deficient number, since it is larger than the sum of its proper divisors (41361471649).

121112331231 is a wasteful number, since it uses less digits than its factorization.

121112331231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247673645.

The product of its digits is 216, while the sum is 21.

Adding to 121112331231 its reverse (132133211121), we get a palindrome (253245542352).

The spelling of 121112331231 in words is "one hundred twenty-one billion, one hundred twelve million, three hundred thirty-one thousand, two hundred thirty-one".