421222044 has 12 divisors (see below), whose sum is σ = 982851464. Its totient is φ = 140407344.

The previous prime is 421222007. The next prime is 421222093. The reversal of 421222044 is 440222124.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 421222044.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17550907 + ... + 17550930.

Almost surely, 2^421222044 is an apocalyptic number.

It is an amenable number.

421222044 is an abundant number, since it is smaller than the sum of its proper divisors (561629420).

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

421222044 is a wasteful number, since it uses less digits than its factorization.

421222044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35101844 (or 35101842 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 21.

The square root of 421222044 is about 20523.6946966183. The cubic root of 421222044 is about 749.6128633124.

Adding to 421222044 its reverse (440222124), we get a palindrome (861444168).

The spelling of 421222044 in words is "four hundred twenty-one million, two hundred twenty-two thousand, forty-four".