121315895 has 8 divisors (see below), whose sum is σ = 147752304. Its totient is φ = 95603904.

The previous prime is 121315889. The next prime is 121315897. The reversal of 121315895 is 598513121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121315895 - 2¹⁶ = 121250359 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121315897) 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, 180734 + ... + 181403.

It is an arithmetic number, because the mean of its divisors is an integer number (18469038).

Almost surely, 2^121315895 is an apocalyptic number.

121315895 is a deficient number, since it is larger than the sum of its proper divisors (26436409).

121315895 is an equidigital number, since it uses as much as digits as its factorization.

121315895 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 362209.

The product of its digits is 10800, while the sum is 35.

The square root of 121315895 is about 11014.3495041695. The cubic root of 121315895 is about 495.0387957213.

The spelling of 121315895 in words is "one hundred twenty-one million, three hundred fifteen thousand, eight hundred ninety-five".