12051655644201 has 4 divisors (see below), whose sum is σ = 16068874192272. Its totient is φ = 8034437096132.

The previous prime is 12051655644191. The next prime is 12051655644227. The reversal of 12051655644201 is 10244655615021.

It is a happy number.

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 12051655644201 - 2⁵ = 12051655644169 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12051655644251) 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, 2008609274031 + ... + 2008609274036.

It is an arithmetic number, because the mean of its divisors is an integer number (4017218548068).

Almost surely, 2^{12051655644201} is an apocalyptic number.

It is an amenable number.

12051655644201 is a deficient number, since it is larger than the sum of its proper divisors (4017218548071).

12051655644201 is an equidigital number, since it uses as much as digits as its factorization.

12051655644201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4017218548070.

The product of its (nonzero) digits is 288000, while the sum is 42.

The spelling of 12051655644201 in words is "twelve trillion, fifty-one billion, six hundred fifty-five million, six hundred forty-four thousand, two hundred one".