22221100001001 has 16 divisors (see below), whose sum is σ = 32321682429120. Its totient is φ = 13467298989120.

The previous prime is 22221100000993. The next prime is 22221100001027. The reversal of 22221100001001 is 10010000112222.

It is not a de Polignac number, because 22221100001001 - 2³ = 22221100000993 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22221100001501) 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, 19439331 + ... + 20550663.

It is an arithmetic number, because the mean of its divisors is an integer number (2020105151820).

Almost surely, 2^{22221100001001} is an apocalyptic number.

It is an amenable number.

22221100001001 is a deficient number, since it is larger than the sum of its proper divisors (10100582428119).

22221100001001 is a wasteful number, since it uses less digits than its factorization.

22221100001001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1717256.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 22221100001001 its reverse (10010000112222), we get a palindrome (32231100113223).

The spelling of 22221100001001 in words is "twenty-two trillion, two hundred twenty-one billion, one hundred million, one thousand, one".