12221020222001 has 4 divisors (see below), whose sum is σ = 12339670903872. Its totient is φ = 12102369540132.

The previous prime is 12221020221961. The next prime is 12221020222049. The reversal of 12221020222001 is 10022202012221.

It is a happy number.

12221020222001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 a de Polignac number, because none of the positive numbers 2^k-12221020222001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12221020222601) 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, 59325340781 + ... + 59325340986.

It is an arithmetic number, because the mean of its divisors is an integer number (3084917725968).

Almost surely, 2^{12221020222001} is an apocalyptic number.

It is an amenable number.

12221020222001 is a deficient number, since it is larger than the sum of its proper divisors (118650681871).

12221020222001 is a wasteful number, since it uses less digits than its factorization.

12221020222001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118650681870.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 12221020222001 its reverse (10022202012221), we get a palindrome (22243222234222).

The spelling of 12221020222001 in words is "twelve trillion, two hundred twenty-one billion, twenty million, two hundred twenty-two thousand, one".