420312021111 has 16 divisors (see below), whose sum is σ = 623271402720. Its totient is φ = 279943896960.

The previous prime is 420312021089. The next prime is 420312021113. The reversal of 420312021111 is 111120213024.

420312021111 is a `hidden beast` number, since 420 + 3 + 1 + 20 + 211 + 11 = 666.

It is not a de Polignac number, because 420312021111 - 2¹⁷ = 420311890039 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420312021113) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7307410 + ... + 7364703.

It is an arithmetic number, because the mean of its divisors is an integer number (38954462670).

Almost surely, 2^420312021111 is an apocalyptic number.

420312021111 is a deficient number, since it is larger than the sum of its proper divisors (202959381609).

420312021111 is a wasteful number, since it uses less digits than its factorization.

420312021111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14673183 (or 14673177 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 420312021111 its reverse (111120213024), we get a palindrome (531432234135).

The spelling of 420312021111 in words is "four hundred twenty billion, three hundred twelve million, twenty-one thousand, one hundred eleven".