12221222001 has 16 divisors (see below), whose sum is σ = 16483376448. Its totient is φ = 8053760000.

The previous prime is 12221221981. The next prime is 12221222011. The reversal of 12221222001 is 10022212221.

It is a cyclic number.

It is not a de Polignac number, because 12221222001 - 2⁶ = 12221221937 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12221222011) 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, 40501 + ... + 161501.

It is an arithmetic number, because the mean of its divisors is an integer number (1030211028).

Almost surely, 2^12221222001 is an apocalyptic number.

It is an amenable number.

12221222001 is a deficient number, since it is larger than the sum of its proper divisors (4262154447).

12221222001 is a wasteful number, since it uses less digits than its factorization.

12221222001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121392.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 12221222001 its reverse (10022212221), we get a palindrome (22243434222).

The spelling of 12221222001 in words is "twelve billion, two hundred twenty-one million, two hundred twenty-two thousand, one".