121361799 has 16 divisors (see below), whose sum is σ = 175868000. Its totient is φ = 73996416.

The previous prime is 121361789. The next prime is 121361803. The reversal of 121361799 is 997163121.

It is a happy number.

It is not a de Polignac number, because 121361799 - 2⁴ = 121361783 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121361789) 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 15 ways as a sum of consecutive naturals, for example, 10024 + ... + 18525.

It is an arithmetic number, because the mean of its divisors is an integer number (10991750).

Almost surely, 2^121361799 is an apocalyptic number.

121361799 is a deficient number, since it is larger than the sum of its proper divisors (54506201).

121361799 is a wasteful number, since it uses less digits than its factorization.

121361799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28674.

The product of its digits is 20412, while the sum is 39.

The square root of 121361799 is about 11016.4331341864. The cubic root of 121361799 is about 495.1012261097.

The spelling of 121361799 in words is "one hundred twenty-one million, three hundred sixty-one thousand, seven hundred ninety-nine".