420312021112 has 32 divisors (see below), whose sum is σ = 834623421120. Its totient is φ = 197751121920.

The previous prime is 420312021089. The next prime is 420312021113. The reversal of 420312021112 is 211120213024.

It is a self number, because there is not a number n which added to its sum of digits gives 420312021112.

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 pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 301537 + ... + 965167.

It is an arithmetic number, because the mean of its divisors is an integer number (26081981910).

Almost surely, 2^420312021112 is an apocalyptic number.

It is an amenable number.

420312021112 is a deficient number, since it is larger than the sum of its proper divisors (414311400008).

420312021112 is a wasteful number, since it uses less digits than its factorization.

420312021112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 668311 (or 668307 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 420312021112 its reverse (211120213024), we get a palindrome (631432234136).

The spelling of 420312021112 in words is "four hundred twenty billion, three hundred twelve million, twenty-one thousand, one hundred twelve".