12205155201 has 4 divisors (see below), whose sum is σ = 16273540272. Its totient is φ = 8136770132.

The previous prime is 12205155181. The next prime is 12205155203. The reversal of 12205155201 is 10255150221.

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 12205155201 - 2⁵ = 12205155169 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12205155203) 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, 2034192531 + ... + 2034192536.

It is an arithmetic number, because the mean of its divisors is an integer number (4068385068).

Almost surely, 2^12205155201 is an apocalyptic number.

It is an amenable number.

12205155201 is a deficient number, since it is larger than the sum of its proper divisors (4068385071).

12205155201 is an equidigital number, since it uses as much as digits as its factorization.

12205155201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4068385070.

The product of its (nonzero) digits is 1000, while the sum is 24.

The spelling of 12205155201 in words is "twelve billion, two hundred five million, one hundred fifty-five thousand, two hundred one".