221312314142 has 16 divisors (see below), whose sum is σ = 336191432640. Its totient is φ = 109248676992.

The previous prime is 221312314081. The next prime is 221312314183. The reversal of 221312314142 is 241413213122.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3353738 + ... + 3419090.

It is an arithmetic number, because the mean of its divisors is an integer number (21011964540).

Almost surely, 2^221312314142 is an apocalyptic number.

221312314142 is a deficient number, since it is larger than the sum of its proper divisors (114879118498).

221312314142 is a wasteful number, since it uses less digits than its factorization.

221312314142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86867.

The product of its digits is 2304, while the sum is 26.

Adding to 221312314142 its reverse (241413213122), we get a palindrome (462725527264).

The spelling of 221312314142 in words is "two hundred twenty-one billion, three hundred twelve million, three hundred fourteen thousand, one hundred forty-two".