202001121120221 has 2 divisors, whose sum is σ = 202001121120222. Its totient is φ = 202001121120220.

The previous prime is 202001121120203. The next prime is 202001121120233. The reversal of 202001121120221 is 122021121100202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 141302219217721 + 60698901902500 = 11887061^2 + 7790950^2 .

It is a cyclic number.

It is not a de Polignac number, because 202001121120221 - 2¹⁰ = 202001121119197 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 202001121120221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (202001121120251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101000560560110 + 101000560560111.

It is an arithmetic number, because the mean of its divisors is an integer number (101000560560111).

Almost surely, 2^{202001121120221} is an apocalyptic number.

It is an amenable number.

202001121120221 is a deficient number, since it is larger than the sum of its proper divisors (1).

202001121120221 is an equidigital number, since it uses as much as digits as its factorization.

202001121120221 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 17.

Adding to 202001121120221 its reverse (122021121100202), we get a palindrome (324022242220423).

The spelling of 202001121120221 in words is "two hundred two trillion, one billion, one hundred twenty-one million, one hundred twenty thousand, two hundred twenty-one".