22021100001001 has 2 divisors, whose sum is σ = 22021100001002. Its totient is φ = 22021100001000.

The previous prime is 22021100000951. The next prime is 22021100001007. The reversal of 22021100001001 is 10010000112022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15749381165401 + 6271718835600 = 3968549^2 + 2504340^2 .

It is a cyclic number.

It is not a de Polignac number, because 22021100001001 - 2¹⁵ = 22021099968233 is a prime.

It is not a weakly prime, because it can be changed into another prime (22021100001007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11010550000500 + 11010550000501.

It is an arithmetic number, because the mean of its divisors is an integer number (11010550000501).

Almost surely, 2^{22021100001001} is an apocalyptic number.

It is an amenable number.

22021100001001 is a deficient number, since it is larger than the sum of its proper divisors (1).

22021100001001 is an equidigital number, since it uses as much as digits as its factorization.

22021100001001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 22021100001001 its reverse (10010000112022), we get a palindrome (32031100113023).

The spelling of 22021100001001 in words is "twenty-two trillion, twenty-one billion, one hundred million, one thousand, one".