221431432222 has 64 divisors (see below), whose sum is σ = 472192809984. Its totient is φ = 74951216640.

The previous prime is 221431432169. The next prime is 221431432231. The reversal of 221431432222 is 222234134122.

221431432222 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3219058 + ... + 3287125.

It is an arithmetic number, because the mean of its divisors is an integer number (7378012656).

Almost surely, 2^221431432222 is an apocalyptic number.

221431432222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

221431432222 is an abundant number, since it is smaller than the sum of its proper divisors (250761377762).

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

221431432222 is a wasteful number, since it uses less digits than its factorization.

221431432222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6506233.

The product of its digits is 9216, while the sum is 28.

Adding to 221431432222 its reverse (222234134122), we get a palindrome (443665566344).

It can be divided in two parts, 22143 and 1432222, that added together give a triangular number (1454365 = T₁₇₀₅).

The spelling of 221431432222 in words is "two hundred twenty-one billion, four hundred thirty-one million, four hundred thirty-two thousand, two hundred twenty-two".