2220102200021 has 2 divisors, whose sum is σ = 2220102200022. Its totient is φ = 2220102200020.

The previous prime is 2220102199993. The next prime is 2220102200023. The reversal of 2220102200021 is 1200022010222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1546824513796 + 673277686225 = 1243714^2 + 820535^2 .

It is a cyclic number.

It is not a de Polignac number, because 2220102200021 - 2²² = 2220098005717 is a prime.

Together with 2220102200023, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 2220102199969 and 2220102200005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2220102200023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1110051100010 + 1110051100011.

It is an arithmetic number, because the mean of its divisors is an integer number (1110051100011).

Almost surely, 2^{2220102200021} is an apocalyptic number.

It is an amenable number.

2220102200021 is a deficient number, since it is larger than the sum of its proper divisors (1).

2220102200021 is an equidigital number, since it uses as much as digits as its factorization.

2220102200021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 2220102200021 its reverse (1200022010222), we get a palindrome (3420124210243).

The spelling of 2220102200021 in words is "two trillion, two hundred twenty billion, one hundred two million, two hundred thousand, twenty-one".