121333110431 has 8 divisors (see below), whose sum is σ = 131439603120. Its totient is φ = 111999792216.

The previous prime is 121333110383. The next prime is 121333110433. The reversal of 121333110431 is 134011333121.

It is a de Polignac number, because none of the positive numbers 2^k-121333110431 is a prime.

It is a super-2 number, since 2×121333110431² (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 = 121333110397 and 121333110406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121333110433) 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, 27611165 + ... + 27615558.

It is an arithmetic number, because the mean of its divisors is an integer number (16429950390).

Almost surely, 2^121333110431 is an apocalyptic number.

121333110431 is a deficient number, since it is larger than the sum of its proper divisors (10106492689).

121333110431 is an frugal number, since it uses more digits than its factorization.

121333110431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55226762 (or 55226736 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 121333110431 its reverse (134011333121), we get a palindrome (255344443552).

The spelling of 121333110431 in words is "one hundred twenty-one billion, three hundred thirty-three million, one hundred ten thousand, four hundred thirty-one".