121510397 has 8 divisors (see below), whose sum is σ = 124160256. Its totient is φ = 118873872.

The previous prime is 121510393. The next prime is 121510399. The reversal of 121510397 is 793015121.

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 121510397 - 2² = 121510393 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 (121510393) 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, 16328 + ... + 22574.

It is an arithmetic number, because the mean of its divisors is an integer number (15520032).

Almost surely, 2^121510397 is an apocalyptic number.

It is an amenable number.

121510397 is a deficient number, since it is larger than the sum of its proper divisors (2649859).

121510397 is an equidigital number, since it uses as much as digits as its factorization.

121510397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6667.

The product of its (nonzero) digits is 1890, while the sum is 29.

The square root of 121510397 is about 11023.1754499327. The cubic root of 121510397 is about 495.3032145599.

The spelling of 121510397 in words is "one hundred twenty-one million, five hundred ten thousand, three hundred ninety-seven".