121040232231 has 4 divisors (see below), whose sum is σ = 161386976312. Its totient is φ = 80693488152.

The previous prime is 121040232167. The next prime is 121040232253. The reversal of 121040232231 is 132232040121.

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

It is not a de Polignac number, because 121040232231 - 2⁶ = 121040232167 is a prime.

It is a super-2 number, since 2×121040232231² (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 = 121040232198 and 121040232207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121040212231) 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, 20173372036 + ... + 20173372041.

It is an arithmetic number, because the mean of its divisors is an integer number (40346744078).

Almost surely, 2^121040232231 is an apocalyptic number.

121040232231 is a deficient number, since it is larger than the sum of its proper divisors (40346744081).

121040232231 is an equidigital number, since it uses as much as digits as its factorization.

121040232231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40346744080.

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

Adding to 121040232231 its reverse (132232040121), we get a palindrome (253272272352).

The spelling of 121040232231 in words is "one hundred twenty-one billion, forty million, two hundred thirty-two thousand, two hundred thirty-one".