22221221102001 has 16 divisors (see below), whose sum is σ = 32920442680320. Its totient is φ = 14814095596560.

The previous prime is 22221221101991. The next prime is 22221221102011. The reversal of 22221221102001 is 10020112212222.

It is a happy number.

22221221102001 is a `hidden beast` number, since 22 + 221 + 221 + 1 + 0 + 200 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (22221221101991) and next prime (22221221102011).

It is not a de Polignac number, because 22221221102001 - 2⁷ = 22221221101873 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22221221102011) 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, 7415511 + ... + 9971571.

It is an arithmetic number, because the mean of its divisors is an integer number (2057527667520).

Almost surely, 2^{22221221102001} is an apocalyptic number.

It is an amenable number.

22221221102001 is a deficient number, since it is larger than the sum of its proper divisors (10699221578319).

22221221102001 is a wasteful number, since it uses less digits than its factorization.

22221221102001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2878053 (or 2878047 counting only the distinct ones).

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

Adding to 22221221102001 its reverse (10020112212222), we get a palindrome (32241333314223).

The spelling of 22221221102001 in words is "twenty-two trillion, two hundred twenty-one billion, two hundred twenty-one million, one hundred two thousand, one".