12221221201 has 16 divisors (see below), whose sum is σ = 14274086400. Its totient is φ = 10245407040.

The previous prime is 12221221193. The next prime is 12221221213. The reversal of 12221221201 is 10212212221.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 12221221201 - 2³ = 12221221193 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12221221501) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 497631 + ... + 521611.

It is an arithmetic number, because the mean of its divisors is an integer number (892130400).

Almost surely, 2^12221221201 is an apocalyptic number.

It is an amenable number.

12221221201 is a deficient number, since it is larger than the sum of its proper divisors (2052865199).

12221221201 is a wasteful number, since it uses less digits than its factorization.

12221221201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25584.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 12221221201 its reverse (10212212221), we get a palindrome (22433433422).

The spelling of 12221221201 in words is "twelve billion, two hundred twenty-one million, two hundred twenty-one thousand, two hundred one".