121330112231 has 4 divisors (see below), whose sum is σ = 124151742792. Its totient is φ = 118508481672.

The previous prime is 121330112207. The next prime is 121330112237. The reversal of 121330112231 is 132211033121.

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 121330112231 - 2¹⁸ = 121329850087 is a prime.

It is a super-2 number, since 2×121330112231² (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 (121330112237) 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, 1410815216 + ... + 1410815301.

It is an arithmetic number, because the mean of its divisors is an integer number (31037935698).

Almost surely, 2^121330112231 is an apocalyptic number.

121330112231 is a deficient number, since it is larger than the sum of its proper divisors (2821630561).

121330112231 is an equidigital number, since it uses as much as digits as its factorization.

121330112231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2821630560.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 121330112231 its reverse (132211033121), we get a palindrome (253541145352).

The spelling of 121330112231 in words is "one hundred twenty-one billion, three hundred thirty million, one hundred twelve thousand, two hundred thirty-one".