421222230445 has 16 divisors (see below), whose sum is σ = 508905718272. Its totient is φ = 334685894400.

The previous prime is 421222230421. The next prime is 421222230461. The reversal of 421222230445 is 544032222124.

It is a happy number.

It is not a de Polignac number, because 421222230445 - 2²¹ = 421220133293 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4409509 + ... + 4504021.

It is an arithmetic number, because the mean of its divisors is an integer number (31806607392).

Almost surely, 2^421222230445 is an apocalyptic number.

It is an amenable number.

421222230445 is a deficient number, since it is larger than the sum of its proper divisors (87683487827).

421222230445 is a wasteful number, since it uses less digits than its factorization.

421222230445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100572.

The product of its (nonzero) digits is 30720, while the sum is 31.

Adding to 421222230445 its reverse (544032222124), we get a palindrome (965254452569).

The spelling of 421222230445 in words is "four hundred twenty-one billion, two hundred twenty-two million, two hundred thirty thousand, four hundred forty-five".