121171262257 has 4 divisors (see below), whose sum is σ = 121430730096. Its totient is φ = 120911794420.

The previous prime is 121171262249. The next prime is 121171262291. The reversal of 121171262257 is 752262171121.

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, and also an emirpimes, since its reverse is a distinct semiprime: 752262171121 = 487 ⋅1544686183.

It is a cyclic number.

It is not a de Polignac number, because 121171262257 - 2³ = 121171262249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121171262057) 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, 129733219 + ... + 129734152.

It is an arithmetic number, because the mean of its divisors is an integer number (30357682524).

Almost surely, 2^121171262257 is an apocalyptic number.

It is an amenable number.

121171262257 is a deficient number, since it is larger than the sum of its proper divisors (259467839).

121171262257 is an equidigital number, since it uses as much as digits as its factorization.

121171262257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259467838.

The product of its digits is 23520, while the sum is 37.

The spelling of 121171262257 in words is "one hundred twenty-one billion, one hundred seventy-one million, two hundred sixty-two thousand, two hundred fifty-seven".