12221122022001 has 16 divisors (see below), whose sum is σ = 18105419838400. Its totient is φ = 8147390435424.

The previous prime is 12221122021991. The next prime is 12221122022029. The reversal of 12221122022001 is 10022022112221.

It is a happy number.

12221122022001 is a `hidden beast` number, since 1 + 2 + 221 + 1 + 220 + 220 + 0 + 1 = 666.

12221122022001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12221122022001 - 2¹⁹ = 12221121497713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12221122022701) 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, 16993245 + ... + 17697813.

It is an arithmetic number, because the mean of its divisors is an integer number (1131588739900).

Almost surely, 2^{12221122022001} is an apocalyptic number.

It is an amenable number.

12221122022001 is a deficient number, since it is larger than the sum of its proper divisors (5884297816399).

12221122022001 is an equidigital number, since it uses as much as digits as its factorization.

12221122022001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1347005 (or 1346999 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 12221122022001 its reverse (10022022112221), we get a palindrome (22243144134222).

The spelling of 12221122022001 in words is "twelve trillion, two hundred twenty-one billion, one hundred twenty-two million, twenty-two thousand, one".