121257699 has 8 divisors (see below), whose sum is σ = 161743440. Its totient is φ = 80805216.

The previous prime is 121257673. The next prime is 121257727. The reversal of 121257699 is 996752121.

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

It is not a de Polignac number, because 121257699 - 2⁵ = 121257667 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121257699.

It is not an unprimeable number, because it can be changed into a prime (121250699) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2037 + ... + 15705.

It is an arithmetic number, because the mean of its divisors is an integer number (20217930).

Almost surely, 2^121257699 is an apocalyptic number.

121257699 is a deficient number, since it is larger than the sum of its proper divisors (40485741).

121257699 is a wasteful number, since it uses less digits than its factorization.

121257699 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16629.

The product of its digits is 68040, while the sum is 42.

The square root of 121257699 is about 11011.7073608047. The cubic root of 121257699 is about 494.9596253163.

The spelling of 121257699 in words is "one hundred twenty-one million, two hundred fifty-seven thousand, six hundred ninety-nine".