22221202222001 has 2 divisors, whose sum is σ = 22221202222002. Its totient is φ = 22221202222000.

The previous prime is 22221202221941. The next prime is 22221202222013. The reversal of 22221202222001 is 10022220212222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22033626612001 + 187575610000 = 4693999^2 + 433100^2 .

It is a cyclic number.

It is not a de Polignac number, because 22221202222001 - 2²⁶ = 22221135113137 is a prime.

It is not a weakly prime, because it can be changed into another prime (22221202222031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11110601111000 + 11110601111001.

It is an arithmetic number, because the mean of its divisors is an integer number (11110601111001).

Almost surely, 2^{22221202222001} is an apocalyptic number.

It is an amenable number.

22221202222001 is a deficient number, since it is larger than the sum of its proper divisors (1).

22221202222001 is an equidigital number, since it uses as much as digits as its factorization.

22221202222001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 22221202222001 its reverse (10022220212222), we get a palindrome (32243422434223).

The spelling of 22221202222001 in words is "twenty-two trillion, two hundred twenty-one billion, two hundred two million, two hundred twenty-two thousand, one".