121541435105 has 16 divisors (see below), whose sum is σ = 150569570304. Its totient is φ = 94087208640.

The previous prime is 121541435069. The next prime is 121541435117. The reversal of 121541435105 is 501534145121.

It is not a de Polignac number, because 121541435105 - 2²⁶ = 121474326241 is a prime.

It is a super-2 number, since 2×121541435105² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1796879 + ... + 1863291.

It is an arithmetic number, because the mean of its divisors is an integer number (9410598144).

Almost surely, 2^121541435105 is an apocalyptic number.

It is an amenable number.

121541435105 is a deficient number, since it is larger than the sum of its proper divisors (29028135199).

121541435105 is a wasteful number, since it uses less digits than its factorization.

121541435105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78256.

The product of its (nonzero) digits is 12000, while the sum is 32.

The spelling of 121541435105 in words is "one hundred twenty-one billion, five hundred forty-one million, four hundred thirty-five thousand, one hundred five".