9010222100021 has 2 divisors, whose sum is σ = 9010222100022. Its totient is φ = 9010222100020.

The previous prime is 9010222100003. The next prime is 9010222100023. The reversal of 9010222100021 is 1200012220109.

It is a happy number.

9010222100021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9006871311025 + 3350788996 = 3001145^2 + 57886^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9010222100021 is a prime.

Together with 9010222100023, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 9010222099966 and 9010222100002.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9010222100023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4505111050010 + 4505111050011.

It is an arithmetic number, because the mean of its divisors is an integer number (4505111050011).

Almost surely, 2^{9010222100021} is an apocalyptic number.

It is an amenable number.

9010222100021 is a deficient number, since it is larger than the sum of its proper divisors (1).

9010222100021 is an equidigital number, since it uses as much as digits as its factorization.

9010222100021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 20.

The spelling of 9010222100021 in words is "nine trillion, ten billion, two hundred twenty-two million, one hundred thousand, twenty-one".