121312044125 has 16 divisors (see below), whose sum is σ = 151453293888. Its totient is φ = 97013826000.

The previous prime is 121312044109. The next prime is 121312044137. The reversal of 121312044125 is 521440213121.

It is a happy number.

It is not a de Polignac number, because 121312044125 - 2⁴ = 121312044109 is a prime.

It is a super-2 number, since 2×121312044125² (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 = 121312044094 and 121312044103.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 163694 + ... + 519056.

It is an arithmetic number, because the mean of its divisors is an integer number (9465830868).

Almost surely, 2^121312044125 is an apocalyptic number.

It is an amenable number.

121312044125 is a deficient number, since it is larger than the sum of its proper divisors (30141249763).

121312044125 is an equidigital number, since it uses as much as digits as its factorization.

121312044125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 358109 (or 358099 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 26.

Adding to 121312044125 its reverse (521440213121), we get a palindrome (642752257246).

The spelling of 121312044125 in words is "one hundred twenty-one billion, three hundred twelve million, forty-four thousand, one hundred twenty-five".