421022011 has 2 divisors, whose sum is σ = 421022012. Its totient is φ = 421022010.

The previous prime is 421022009. The next prime is 421022023. The reversal of 421022011 is 110220124.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 421022011 - 2¹ = 421022009 is a prime.

Together with 421022009, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 421021982 and 421022000.

It is not a weakly prime, because it can be changed into another prime (421022411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210511005 + 210511006.

It is an arithmetic number, because the mean of its divisors is an integer number (210511006).

Almost surely, 2^421022011 is an apocalyptic number.

421022011 is a deficient number, since it is larger than the sum of its proper divisors (1).

421022011 is an equidigital number, since it uses as much as digits as its factorization.

421022011 is an odious number, because the sum of its binary digits is odd.

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

The square root of 421022011 is about 20518.8208969229. The cubic root of 421022011 is about 749.4941839806.

Adding to 421022011 its reverse (110220124), we get a palindrome (531242135).

The spelling of 421022011 in words is "four hundred twenty-one million, twenty-two thousand, eleven".