22221020202001 has 2 divisors, whose sum is σ = 22221020202002. Its totient is φ = 22221020202000.

The previous prime is 22221020201957. The next prime is 22221020202041. The reversal of 22221020202001 is 10020202012222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11937550165776 + 10283470036225 = 3455076^2 + 3206785^2 .

It is a cyclic number.

It is not a de Polignac number, because 22221020202001 - 2⁷ = 22221020201873 is a prime.

It is not a weakly prime, because it can be changed into another prime (22221020202041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11110510101000 + 11110510101001.

It is an arithmetic number, because the mean of its divisors is an integer number (11110510101001).

Almost surely, 2^{22221020202001} is an apocalyptic number.

It is an amenable number.

22221020202001 is a deficient number, since it is larger than the sum of its proper divisors (1).

22221020202001 is an equidigital number, since it uses as much as digits as its factorization.

22221020202001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 22221020202001 its reverse (10020202012222), we get a palindrome (32241222214223).

The spelling of 22221020202001 in words is "twenty-two trillion, two hundred twenty-one billion, twenty million, two hundred two thousand, one".