420205022011 has 2 divisors, whose sum is σ = 420205022012. Its totient is φ = 420205022010.

The previous prime is 420205022009. The next prime is 420205022053. The reversal of 420205022011 is 110220502024.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 420205022011 - 2¹ = 420205022009 is a prime.

Together with 420205022009, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 420205022011.

It is not a weakly prime, because it can be changed into another prime (420205022311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210102511005 + 210102511006.

It is an arithmetic number, because the mean of its divisors is an integer number (210102511006).

Almost surely, 2^420205022011 is an apocalyptic number.

420205022011 is a deficient number, since it is larger than the sum of its proper divisors (1).

420205022011 is an equidigital number, since it uses as much as digits as its factorization.

420205022011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 320, while the sum is 19.

Adding to 420205022011 its reverse (110220502024), we get a palindrome (530425524035).

The spelling of 420205022011 in words is "four hundred twenty billion, two hundred five million, twenty-two thousand, eleven".