223312421420 has 24 divisors (see below), whose sum is σ = 511588456848. Its totient is φ = 81204516800.

The previous prime is 223312421417. The next prime is 223312421429. The reversal of 223312421420 is 24124213322.

It is a self number, because there is not a number n which added to its sum of digits gives 223312421420.

It is not an unprimeable number, because it can be changed into a prime (223312421429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 507528011 + ... + 507528450.

It is an arithmetic number, because the mean of its divisors is an integer number (21316185702).

Almost surely, 2^223312421420 is an apocalyptic number.

223312421420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

223312421420 is an abundant number, since it is smaller than the sum of its proper divisors (288276035428).

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

223312421420 is a wasteful number, since it uses less digits than its factorization.

223312421420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1015056481 (or 1015056479 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 223312421420 its reverse (24124213322), we get a palindrome (247436634742).

The spelling of 223312421420 in words is "two hundred twenty-three billion, three hundred twelve million, four hundred twenty-one thousand, four hundred twenty".