121004550012005 has 24 divisors (see below), whose sum is σ = 159736506160896. Its totient is φ = 87931351645280.

The previous prime is 121004550011987. The next prime is 121004550012007. The reversal of 121004550012005 is 500210055400121.

It is not a de Polignac number, because 121004550012005 - 2¹⁴ = 121004549995621 is a prime.

It is a super-2 number, since 2×121004550012005² (a number of 29 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 (121004550012007) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 81029309 + ... + 82509138.

It is an arithmetic number, because the mean of its divisors is an integer number (6655687756704).

Almost surely, 2^{121004550012005} is an apocalyptic number.

It is an amenable number.

121004550012005 is a deficient number, since it is larger than the sum of its proper divisors (38731956148891).

121004550012005 is a wasteful number, since it uses less digits than its factorization.

121004550012005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163539697 (or 163539686 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 26.

The spelling of 121004550012005 in words is "one hundred twenty-one trillion, four billion, five hundred fifty million, twelve thousand, five".