121220231031113 has 4 divisors (see below), whose sum is σ = 122174721039360. Its totient is φ = 120265741022868.

The previous prime is 121220231031079. The next prime is 121220231031167. The reversal of 121220231031113 is 311130132022121.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 121220231031113 - 2¹⁸ = 121220230768969 is a prime.

It is a super-2 number, since 2×121220231031113² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121240231031113) 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, 477245003933 + ... + 477245004186.

It is an arithmetic number, because the mean of its divisors is an integer number (30543680259840).

Almost surely, 2^{121220231031113} is an apocalyptic number.

It is an amenable number.

121220231031113 is a deficient number, since it is larger than the sum of its proper divisors (954490008247).

121220231031113 is an equidigital number, since it uses as much as digits as its factorization.

121220231031113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 954490008246.

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 121220231031113 its reverse (311130132022121), we get a palindrome (432350363053234).

The spelling of 121220231031113 in words is "one hundred twenty-one trillion, two hundred twenty billion, two hundred thirty-one million, thirty-one thousand, one hundred thirteen".