220002110522021 has 2 divisors, whose sum is σ = 220002110522022. Its totient is φ = 220002110522020.

The previous prime is 220002110521987. The next prime is 220002110522039. The reversal of 220002110522021 is 120225011200022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 202698290956225 + 17303819565796 = 14237215^2 + 4159786^2 .

It is a cyclic number.

It is not a de Polignac number, because 220002110522021 - 2⁴² = 215604064010917 is a prime.

It is a super-2 number, since 2×220002110522021² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 220002110521984 and 220002110522002.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220502110522021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110001055261010 + 110001055261011.

It is an arithmetic number, because the mean of its divisors is an integer number (110001055261011).

Almost surely, 2^{220002110522021} is an apocalyptic number.

It is an amenable number.

220002110522021 is a deficient number, since it is larger than the sum of its proper divisors (1).

220002110522021 is an equidigital number, since it uses as much as digits as its factorization.

220002110522021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 320, while the sum is 20.

Adding to 220002110522021 its reverse (120225011200022), we get a palindrome (340227121722043).

The spelling of 220002110522021 in words is "two hundred twenty trillion, two billion, one hundred ten million, five hundred twenty-two thousand, twenty-one".