221311433130 has 64 divisors (see below), whose sum is σ = 537381174528. Its totient is φ = 58327718400.

The previous prime is 221311433111. The next prime is 221311433197. The reversal of 221311433130 is 31334113122.

221311433130 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 221311433130.

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, 768414 + ... + 1016406.

It is an arithmetic number, because the mean of its divisors is an integer number (8396580852).

Almost surely, 2^221311433130 is an apocalyptic number.

221311433130 is an abundant number, since it is smaller than the sum of its proper divisors (316069741398).

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

221311433130 is a wasteful number, since it uses less digits than its factorization.

221311433130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248351.

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 221311433130 its reverse (31334113122), we get a palindrome (252645546252).

The spelling of 221311433130 in words is "two hundred twenty-one billion, three hundred eleven million, four hundred thirty-three thousand, one hundred thirty".