220022011021 has 2 divisors, whose sum is σ = 220022011022. Its totient is φ = 220022011020.

The previous prime is 220022011019. The next prime is 220022011057. The reversal of 220022011021 is 120110220022.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 177889932900 + 42132078121 = 421770^2 + 205261^2 .

It is a cyclic number.

It is not a de Polignac number, because 220022011021 - 2¹ = 220022011019 is a prime.

Together with 220022011019, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 220022010992 and 220022011010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220022011921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110011005510 + 110011005511.

It is an arithmetic number, because the mean of its divisors is an integer number (110011005511).

Almost surely, 2^220022011021 is an apocalyptic number.

It is an amenable number.

220022011021 is a deficient number, since it is larger than the sum of its proper divisors (1).

220022011021 is an equidigital number, since it uses as much as digits as its factorization.

220022011021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 220022011021 its reverse (120110220022), we get a palindrome (340132231043).

The spelling of 220022011021 in words is "two hundred twenty billion, twenty-two million, eleven thousand, twenty-one".