2120223202021 has 2 divisors, whose sum is σ = 2120223202022. Its totient is φ = 2120223202020.

The previous prime is 2120223201991. The next prime is 2120223202033. The reversal of 2120223202021 is 1202023220212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1178876949121 + 941346252900 = 1085761^2 + 970230^2 .

It is a cyclic number.

It is not a de Polignac number, because 2120223202021 - 2⁷ = 2120223201893 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2120223202021.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2120223202051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060111601010 + 1060111601011.

It is an arithmetic number, because the mean of its divisors is an integer number (1060111601011).

Almost surely, 2^{2120223202021} is an apocalyptic number.

It is an amenable number.

2120223202021 is a deficient number, since it is larger than the sum of its proper divisors (1).

2120223202021 is an equidigital number, since it uses as much as digits as its factorization.

2120223202021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 2120223202021 its reverse (1202023220212), we get a palindrome (3322246422233).

The spelling of 2120223202021 in words is "two trillion, one hundred twenty billion, two hundred twenty-three million, two hundred two thousand, twenty-one".