421220200024 has 16 divisors (see below), whose sum is σ = 850540788720. Its totient is φ = 194409323040.

The previous prime is 421220200003. The next prime is 421220200067. The reversal of 421220200024 is 420002022124.

It is a junction number, because it is equal to n+sod(n) for n = 421220199974 and 421220200010.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2025097012 + ... + 2025097219.

It is an arithmetic number, because the mean of its divisors is an integer number (53158799295).

Almost surely, 2^421220200024 is an apocalyptic number.

It is an amenable number.

421220200024 is an abundant number, since it is smaller than the sum of its proper divisors (429320588696).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

421220200024 is a wasteful number, since it uses less digits than its factorization.

421220200024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4050194250 (or 4050194246 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 19.

Adding to 421220200024 its reverse (420002022124), we get a palindrome (841222222148).

The spelling of 421220200024 in words is "four hundred twenty-one billion, two hundred twenty million, two hundred thousand, twenty-four".