202001000221 has 2 divisors, whose sum is σ = 202001000222. Its totient is φ = 202001000220.

The previous prime is 202001000213. The next prime is 202001000249. The reversal of 202001000221 is 122000100202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 128959992100 + 73041008121 = 359110^2 + 270261^2 .

It is a cyclic number.

It is not a de Polignac number, because 202001000221 - 2³ = 202001000213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 202001000198 and 202001000207.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (202001000261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101000500110 + 101000500111.

It is an arithmetic number, because the mean of its divisors is an integer number (101000500111).

Almost surely, 2^202001000221 is an apocalyptic number.

It is an amenable number.

202001000221 is a deficient number, since it is larger than the sum of its proper divisors (1).

202001000221 is an equidigital number, since it uses as much as digits as its factorization.

202001000221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 202001000221 its reverse (122000100202), we get a palindrome (324001100423).

The spelling of 202001000221 in words is "two hundred two billion, one million, two hundred twenty-one", and thus it is an aban number.