121131550423091 has 8 divisors (see below), whose sum is σ = 133483068087600. Its totient is φ = 109213419343392.

The previous prime is 121131550423049. The next prime is 121131550423123. The reversal of 121131550423091 is 190324055131121.

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

It is not a de Polignac number, because 121131550423091 - 2²⁶ = 121131483314227 is a prime.

It is a super-2 number, since 2×121131550423091² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121131550423691) 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, 108346645616 + ... + 108346646733.

It is an arithmetic number, because the mean of its divisors is an integer number (16685383510950).

Almost surely, 2^{121131550423091} is an apocalyptic number.

121131550423091 is a deficient number, since it is larger than the sum of its proper divisors (12351517664509).

121131550423091 is a wasteful number, since it uses less digits than its factorization.

121131550423091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216693292405.

The product of its (nonzero) digits is 32400, while the sum is 38.

The spelling of 121131550423091 in words is "one hundred twenty-one trillion, one hundred thirty-one billion, five hundred fifty million, four hundred twenty-three thousand, ninety-one".