221232421222 has 8 divisors (see below), whose sum is σ = 332102536776. Its totient is φ = 110531575632.

The previous prime is 221232421219. The next prime is 221232421237. The reversal of 221232421222 is 222124232122.

It is a sphenic number, since it is the product of 3 distinct primes.

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, 42314223 + ... + 42319450.

It is an arithmetic number, because the mean of its divisors is an integer number (41512817097).

Almost surely, 2^221232421222 is an apocalyptic number.

221232421222 is a deficient number, since it is larger than the sum of its proper divisors (110870115554).

221232421222 is a wasteful number, since it uses less digits than its factorization.

221232421222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84634982.

The product of its digits is 3072, while the sum is 25.

Adding to 221232421222 its reverse (222124232122), we get a palindrome (443356653344).

The spelling of 221232421222 in words is "two hundred twenty-one billion, two hundred thirty-two million, four hundred twenty-one thousand, two hundred twenty-two".