420122221109 has 2 divisors, whose sum is σ = 420122221110. Its totient is φ = 420122221108.

The previous prime is 420122221021. The next prime is 420122221111. The reversal of 420122221109 is 901122221024.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 415219140625 + 4903080484 = 644375^2 + 70022^2 .

It is a cyclic number.

It is not a de Polignac number, because 420122221109 - 2⁸ = 420122220853 is a prime.

Together with 420122221111, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (420122211109) 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, 210061110554 + 210061110555.

It is an arithmetic number, because the mean of its divisors is an integer number (210061110555).

Almost surely, 2^420122221109 is an apocalyptic number.

It is an amenable number.

420122221109 is a deficient number, since it is larger than the sum of its proper divisors (1).

420122221109 is an equidigital number, since it uses as much as digits as its factorization.

420122221109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 26.

The spelling of 420122221109 in words is "four hundred twenty billion, one hundred twenty-two million, two hundred twenty-one thousand, one hundred nine".