22221201121201 has 2 divisors, whose sum is σ = 22221201121202. Its totient is φ = 22221201121200.

The previous prime is 22221201121193. The next prime is 22221201121211. The reversal of 22221201121201 is 10212110212222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13652847640576 + 8568353480625 = 3694976^2 + 2927175^2 .

It is a cyclic number.

It is not a de Polignac number, because 22221201121201 - 2³ = 22221201121193 is a prime.

It is not a weakly prime, because it can be changed into another prime (22221201121211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11110600560600 + 11110600560601.

It is an arithmetic number, because the mean of its divisors is an integer number (11110600560601).

Almost surely, 2^{22221201121201} is an apocalyptic number.

It is an amenable number.

22221201121201 is a deficient number, since it is larger than the sum of its proper divisors (1).

22221201121201 is an equidigital number, since it uses as much as digits as its factorization.

22221201121201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 22221201121201 its reverse (10212110212222), we get a palindrome (32433311333423).

The spelling of 22221201121201 in words is "twenty-two trillion, two hundred twenty-one billion, two hundred one million, one hundred twenty-one thousand, two hundred one".