22212201221001 has 24 divisors (see below), whose sum is σ = 35001685420416. Its totient is φ = 13461693567840.

The previous prime is 22212201220931. The next prime is 22212201221009. The reversal of 22212201221001 is 10012210221222.

It is a happy number.

22212201221001 is a `hidden beast` number, since 2 + 221 + 220 + 1 + 221 + 0 + 0 + 1 = 666.

It is not a de Polignac number, because 22212201221001 - 2⁷ = 22212201220873 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22212201221009) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3451911 + ... + 7506003.

It is an arithmetic number, because the mean of its divisors is an integer number (1458403559184).

Almost surely, 2^{22212201221001} is an apocalyptic number.

It is an amenable number.

22212201221001 is a deficient number, since it is larger than the sum of its proper divisors (12789484199415).

22212201221001 is a wasteful number, since it uses less digits than its factorization.

22212201221001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4109453 (or 4109450 counting only the distinct ones).

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

Adding to 22212201221001 its reverse (10012210221222), we get a palindrome (32224411442223).

The spelling of 22212201221001 in words is "twenty-two trillion, two hundred twelve billion, two hundred one million, two hundred twenty-one thousand, one".