2101002200221 has 2 divisors, whose sum is σ = 2101002200222. Its totient is φ = 2101002200220.

The previous prime is 2101002200201. The next prime is 2101002200237. The reversal of 2101002200221 is 1220022001012.

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., 1399344677721 + 701657522500 = 1182939^2 + 837650^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2101002200221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2101002200201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1050501100110 + 1050501100111.

It is an arithmetic number, because the mean of its divisors is an integer number (1050501100111).

Almost surely, 2^{2101002200221} is an apocalyptic number.

It is an amenable number.

2101002200221 is a deficient number, since it is larger than the sum of its proper divisors (1).

2101002200221 is an equidigital number, since it uses as much as digits as its factorization.

2101002200221 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 13.

Adding to 2101002200221 its reverse (1220022001012), we get a palindrome (3321024201233).

The spelling of 2101002200221 in words is "two trillion, one hundred one billion, two million, two hundred thousand, two hundred twenty-one".