220002001222021 has 2 divisors, whose sum is σ = 220002001222022. Its totient is φ = 220002001222020.

The previous prime is 220002001221983. The next prime is 220002001222033. The reversal of 220002001222021 is 120222100200022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 214625840212996 + 5376161009025 = 14650114^2 + 2318655^2 .

It is a cyclic number.

It is not a de Polignac number, because 220002001222021 - 2¹³ = 220002001213829 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 220002001221986 and 220002001222004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220002001222921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110001000611010 + 110001000611011.

It is an arithmetic number, because the mean of its divisors is an integer number (110001000611011).

Almost surely, 2^{220002001222021} is an apocalyptic number.

It is an amenable number.

220002001222021 is a deficient number, since it is larger than the sum of its proper divisors (1).

220002001222021 is an equidigital number, since it uses as much as digits as its factorization.

220002001222021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 220002001222021 its reverse (120222100200022), we get a palindrome (340224101422043).

The spelling of 220002001222021 in words is "two hundred twenty trillion, two billion, one million, two hundred twenty-two thousand, twenty-one".