221304332142 has 32 divisors (see below), whose sum is σ = 505078960800. Its totient is φ = 71774377344.

The previous prime is 221304332141. The next prime is 221304332149. The reversal of 221304332142 is 241233403122.

221304332142 is a `hidden beast` number, since 2 + 2 + 13 + 0 + 433 + 214 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221304332141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55379467 + ... + 55383462.

It is an arithmetic number, because the mean of its divisors is an integer number (15783717525).

Almost surely, 2^221304332142 is an apocalyptic number.

221304332142 is an abundant number, since it is smaller than the sum of its proper divisors (283774628658).

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

221304332142 is a wasteful number, since it uses less digits than its factorization.

221304332142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110762977 (or 110762971 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

Adding to 221304332142 its reverse (241233403122), we get a palindrome (462537735264).

The spelling of 221304332142 in words is "two hundred twenty-one billion, three hundred four million, three hundred thirty-two thousand, one hundred forty-two".