22222121020201 has 2 divisors, whose sum is σ = 22222121020202. Its totient is φ = 22222121020200.

The previous prime is 22222121020189. The next prime is 22222121020217. The reversal of 22222121020201 is 10202012122222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16681506490000 + 5540614530201 = 4084300^2 + 2353851^2 .

It is a cyclic number.

It is not a de Polignac number, because 22222121020201 - 2²⁷ = 22221986802473 is a prime.

It is not a weakly prime, because it can be changed into another prime (22222121020501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11111060510100 + 11111060510101.

It is an arithmetic number, because the mean of its divisors is an integer number (11111060510101).

Almost surely, 2^{22222121020201} is an apocalyptic number.

It is an amenable number.

22222121020201 is a deficient number, since it is larger than the sum of its proper divisors (1).

22222121020201 is an equidigital number, since it uses as much as digits as its factorization.

22222121020201 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 22222121020201 its reverse (10202012122222), we get a palindrome (32424133142423).

The spelling of 22222121020201 in words is "twenty-two trillion, two hundred twenty-two billion, one hundred twenty-one million, twenty thousand, two hundred one".