121289323199 has 16 divisors (see below), whose sum is σ = 133317929376. Its totient is φ = 109428211200.

The previous prime is 121289323189. The next prime is 121289323271. The reversal of 121289323199 is 991323982121.

It is not a de Polignac number, because 121289323199 - 2²⁴ = 121272545983 is a prime.

It is a super-2 number, since 2×121289323199² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121289323189) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6955139 + ... + 6972555.

It is an arithmetic number, because the mean of its divisors is an integer number (8332370586).

Almost surely, 2^121289323199 is an apocalyptic number.

121289323199 is a deficient number, since it is larger than the sum of its proper divisors (12028606177).

121289323199 is a wasteful number, since it uses less digits than its factorization.

121289323199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22186.

The product of its digits is 419904, while the sum is 50.

The spelling of 121289323199 in words is "one hundred twenty-one billion, two hundred eighty-nine million, three hundred twenty-three thousand, one hundred ninety-nine".