20202011221001 has 2 divisors, whose sum is σ = 20202011221002. Its totient is φ = 20202011221000.

The previous prime is 20202011220991. The next prime is 20202011221033. The reversal of 20202011221001 is 10012211020202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20200521261001 + 1489960000 = 4494499^2 + 38600^2 .

It is a cyclic number.

It is not a de Polignac number, because 20202011221001 - 2³⁸ = 19927133314057 is a prime.

It is not a weakly prime, because it can be changed into another prime (20202011521001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10101005610500 + 10101005610501.

It is an arithmetic number, because the mean of its divisors is an integer number (10101005610501).

Almost surely, 2^{20202011221001} is an apocalyptic number.

It is an amenable number.

20202011221001 is a deficient number, since it is larger than the sum of its proper divisors (1).

20202011221001 is an equidigital number, since it uses as much as digits as its factorization.

20202011221001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 20202011221001 its reverse (10012211020202), we get a palindrome (30214222241203).

The spelling of 20202011221001 in words is "twenty trillion, two hundred two billion, eleven million, two hundred twenty-one thousand, one".