221310432222 has 32 divisors (see below), whose sum is σ = 482877690624. Its totient is φ = 67061188800.

The previous prime is 221310432163. The next prime is 221310432251. The reversal of 221310432222 is 222234013122.

It is a junction number, because it is equal to n+sod(n) for n = 221310432192 and 221310432201.

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, 2338647 + ... + 2431437.

It is an arithmetic number, because the mean of its divisors is an integer number (15089927832).

Almost surely, 2^221310432222 is an apocalyptic number.

221310432222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

221310432222 is an abundant number, since it is smaller than the sum of its proper divisors (261567258402).

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

221310432222 is a wasteful number, since it uses less digits than its factorization.

221310432222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128944.

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 221310432222 its reverse (222234013122), we get a palindrome (443544445344).

The spelling of 221310432222 in words is "two hundred twenty-one billion, three hundred ten million, four hundred thirty-two thousand, two hundred twenty-two".