10222222201021 has 2 divisors, whose sum is σ = 10222222201022. Its totient is φ = 10222222201020.

The previous prime is 10222222201019. The next prime is 10222222201033. The reversal of 10222222201021 is 12010222222201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7411385532996 + 2810836668025 = 2722386^2 + 1676555^2 .

It is a cyclic number.

It is not a de Polignac number, because 10222222201021 - 2¹ = 10222222201019 is a prime.

Together with 10222222201019, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 10222222201021.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10222222201921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5111111100510 + 5111111100511.

It is an arithmetic number, because the mean of its divisors is an integer number (5111111100511).

Almost surely, 2^{10222222201021} is an apocalyptic number.

It is an amenable number.

10222222201021 is a deficient number, since it is larger than the sum of its proper divisors (1).

10222222201021 is an equidigital number, since it uses as much as digits as its factorization.

10222222201021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 10222222201021 its reverse (12010222222201), we get a palindrome (22232444423222).

The spelling of 10222222201021 in words is "ten trillion, two hundred twenty-two billion, two hundred twenty-two million, two hundred one thousand, twenty-one".