20000000022001 has 2 divisors, whose sum is σ = 20000000022002. Its totient is φ = 20000000022000.

The previous prime is 20000000021971. The next prime is 20000000022011. The reversal of 20000000022001 is 10022000000002.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12514719888225 + 7485280133776 = 3537615^2 + 2735924^2 .

It is a cyclic number.

It is not a de Polignac number, because 20000000022001 - 2⁹ = 20000000021489 is a prime.

It is not a weakly prime, because it can be changed into another prime (20000000022011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10000000011000 + 10000000011001.

It is an arithmetic number, because the mean of its divisors is an integer number (10000000011001).

Almost surely, 2^{20000000022001} is an apocalyptic number.

It is an amenable number.

20000000022001 is a deficient number, since it is larger than the sum of its proper divisors (1).

20000000022001 is an equidigital number, since it uses as much as digits as its factorization.

20000000022001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8, while the sum is 7.

Adding to 20000000022001 its reverse (10022000000002), we get a palindrome (30022000022003).

The spelling of 20000000022001 in words is "twenty trillion, twenty-two thousand, one".