121175997 has 4 divisors (see below), whose sum is σ = 161568000. Its totient is φ = 80783996.

The previous prime is 121175987. The next prime is 121176031. The reversal of 121175997 is 799571121.

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 121175997 - 2⁴ = 121175981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121175927) 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, 20195997 + ... + 20196002.

It is an arithmetic number, because the mean of its divisors is an integer number (40392000).

Almost surely, 2^121175997 is an apocalyptic number.

It is an amenable number.

121175997 is a deficient number, since it is larger than the sum of its proper divisors (40392003).

121175997 is an equidigital number, since it uses as much as digits as its factorization.

121175997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40392002.

The product of its digits is 39690, while the sum is 42.

The square root of 121175997 is about 11007.9969567583. The cubic root of 121175997 is about 494.8484343636.

The spelling of 121175997 in words is "one hundred twenty-one million, one hundred seventy-five thousand, nine hundred ninety-seven".