121505435005 has 32 divisors (see below), whose sum is σ = 156674304000. Its totient is φ = 90189288000.

The previous prime is 121505434969. The next prime is 121505435017. The reversal of 121505435005 is 500534505121.

It is not a de Polignac number, because 121505435005 - 2²⁷ = 121371217277 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 958846 + ... + 1078144.

It is an arithmetic number, because the mean of its divisors is an integer number (4896072000).

Almost surely, 2^121505435005 is an apocalyptic number.

It is an amenable number.

121505435005 is a deficient number, since it is larger than the sum of its proper divisors (35168868995).

121505435005 is a wasteful number, since it uses less digits than its factorization.

121505435005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119545.

The product of its (nonzero) digits is 15000, while the sum is 31.

The spelling of 121505435005 in words is "one hundred twenty-one billion, five hundred five million, four hundred thirty-five thousand, five".