420222611 has 2 divisors, whose sum is σ = 420222612. Its totient is φ = 420222610.

The previous prime is 420222599. The next prime is 420222619. The reversal of 420222611 is 116222024.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 420222611 - 2⁶ = 420222547 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (420222619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210111305 + 210111306.

It is an arithmetic number, because the mean of its divisors is an integer number (210111306).

Almost surely, 2^420222611 is an apocalyptic number.

420222611 is a deficient number, since it is larger than the sum of its proper divisors (1).

420222611 is an equidigital number, since it uses as much as digits as its factorization.

420222611 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 20.

The square root of 420222611 is about 20499.3319647251. The cubic root of 420222611 is about 749.0195253029.

Adding to 420222611 its reverse (116222024), we get a palindrome (536444635).

The spelling of 420222611 in words is "four hundred twenty million, two hundred twenty-two thousand, six hundred eleven".