2002020102221 has 2 divisors, whose sum is σ = 2002020102222. Its totient is φ = 2002020102220.

The previous prime is 2002020102193. The next prime is 2002020102227. The reversal of 2002020102221 is 1222010202002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1517673699721 + 484346402500 = 1231939^2 + 695950^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2002020102221 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2002020102196 and 2002020102205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2002020102227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1001010051110 + 1001010051111.

It is an arithmetic number, because the mean of its divisors is an integer number (1001010051111).

Almost surely, 2^{2002020102221} is an apocalyptic number.

It is an amenable number.

2002020102221 is a deficient number, since it is larger than the sum of its proper divisors (1).

2002020102221 is an equidigital number, since it uses as much as digits as its factorization.

2002020102221 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 14.

Adding to 2002020102221 its reverse (1222010202002), we get a palindrome (3224030304223).

The spelling of 2002020102221 in words is "two trillion, two billion, twenty million, one hundred two thousand, two hundred twenty-one".