2205104122121 has 4 divisors (see below), whose sum is σ = 2205164101392. Its totient is φ = 2205044142852.

The previous prime is 2205104122093. The next prime is 2205104122217. The reversal of 2205104122121 is 1212214015022.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2205104122121 - 2¹⁰ = 2205104121097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2205104172121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29934455 + ... + 30008028.

It is an arithmetic number, because the mean of its divisors is an integer number (551291025348).

Almost surely, 2^{2205104122121} is an apocalyptic number.

It is an amenable number.

2205104122121 is a deficient number, since it is larger than the sum of its proper divisors (59979271).

2205104122121 is an equidigital number, since it uses as much as digits as its factorization.

2205104122121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59979270.

The product of its (nonzero) digits is 640, while the sum is 23.

Adding to 2205104122121 its reverse (1212214015022), we get a palindrome (3417318137143).

The spelling of 2205104122121 in words is "two trillion, two hundred five billion, one hundred four million, one hundred twenty-two thousand, one hundred twenty-one".