121312053 has 16 divisors (see below), whose sum is σ = 181890240. Its totient is φ = 79898832.

The previous prime is 121312049. The next prime is 121312069. The reversal of 121312053 is 350213121.

It is not a de Polignac number, because 121312053 - 2² = 121312049 is a prime.

It is a super-2 number, since 2×121312053² = 29433228406149618, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121312003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24826 + ... + 29307.

It is an arithmetic number, because the mean of its divisors is an integer number (11368140).

Almost surely, 2^121312053 is an apocalyptic number.

It is an amenable number.

121312053 is a deficient number, since it is larger than the sum of its proper divisors (60578187).

121312053 is an equidigital number, since it uses as much as digits as its factorization.

121312053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54225 (or 54219 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 121312053 is about 11014.1750939414. The cubic root of 121312053 is about 495.0335698078.

Adding to 121312053 its reverse (350213121), we get a palindrome (471525174).

The spelling of 121312053 in words is "one hundred twenty-one million, three hundred twelve thousand, fifty-three".