121303351809 has 6 divisors (see below), whose sum is σ = 175215952626. Its totient is φ = 80868901200.

The previous prime is 121303351787. The next prime is 121303351831. The reversal of 121303351809 is 908153303121.

121303351809 is a `hidden beast` number, since 1 + 2 + 130 + 3 + 3 + 518 + 0 + 9 = 666.

It is an interprime number because it is at equal distance from previous prime (121303351787) and next prime (121303351831).

It can be written as a sum of positive squares in only one way, i.e., 98329280625 + 22974071184 = 313575^2 + 151572^2 .

It is not a de Polignac number, because 121303351809 - 2⁹ = 121303351297 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121303301809) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6739075092 + ... + 6739075109.

It is an arithmetic number, because the mean of its divisors is an integer number (29202658771).

Almost surely, 2^121303351809 is an apocalyptic number.

It is an amenable number.

121303351809 is a deficient number, since it is larger than the sum of its proper divisors (53912600817).

121303351809 is a wasteful number, since it uses less digits than its factorization.

121303351809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13478150207 (or 13478150204 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The spelling of 121303351809 in words is "one hundred twenty-one billion, three hundred three million, three hundred fifty-one thousand, eight hundred nine".