22100201000021 has 2 divisors, whose sum is σ = 22100201000022. Its totient is φ = 22100201000020.

The previous prime is 22100200999969. The next prime is 22100201000051. The reversal of 22100201000021 is 12000010200122.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20303233939921 + 1796967060100 = 4505911^2 + 1340510^2 .

It is a cyclic number.

It is not a de Polignac number, because 22100201000021 - 2⁶ = 22100200999957 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 22100200999966 and 22100201000011.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22100201000051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11050100500010 + 11050100500011.

It is an arithmetic number, because the mean of its divisors is an integer number (11050100500011).

Almost surely, 2^{22100201000021} is an apocalyptic number.

It is an amenable number.

22100201000021 is a deficient number, since it is larger than the sum of its proper divisors (1).

22100201000021 is an equidigital number, since it uses as much as digits as its factorization.

22100201000021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 22100201000021 its reverse (12000010200122), we get a palindrome (34100211200143).

The spelling of 22100201000021 in words is "twenty-two trillion, one hundred billion, two hundred one million, twenty-one", and thus it is an aban number.