22222000002001 has 2 divisors, whose sum is σ = 22222000002002. Its totient is φ = 22222000002000.

The previous prime is 22222000001941. The next prime is 22222000002023. The reversal of 22222000002001 is 10020000022222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16798685904400 + 5423314097601 = 4098620^2 + 2328801^2 .

It is a cyclic number.

It is not a de Polignac number, because 22222000002001 - 2⁹ = 22222000001489 is a prime.

It is not a weakly prime, because it can be changed into another prime (22222000005001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11111000001000 + 11111000001001.

It is an arithmetic number, because the mean of its divisors is an integer number (11111000001001).

Almost surely, 2^{22222000002001} is an apocalyptic number.

It is an amenable number.

22222000002001 is a deficient number, since it is larger than the sum of its proper divisors (1).

22222000002001 is an equidigital number, since it uses as much as digits as its factorization.

22222000002001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64, while the sum is 13.

Adding to 22222000002001 its reverse (10020000022222), we get a palindrome (32242000024223).

The spelling of 22222000002001 in words is "twenty-two trillion, two hundred twenty-two billion, two thousand, one".