142112210221 has 8 divisors (see below), whose sum is σ = 145305226080. Its totient is φ = 138938144592.

The previous prime is 142112210183. The next prime is 142112210237. The reversal of 142112210221 is 122012211241.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142112210221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142112210621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4722391 + ... + 4752388.

It is an arithmetic number, because the mean of its divisors is an integer number (18163153260).

Almost surely, 2^142112210221 is an apocalyptic number.

It is an amenable number.

142112210221 is a deficient number, since it is larger than the sum of its proper divisors (3193015859).

142112210221 is an equidigital number, since it uses as much as digits as its factorization.

142112210221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9475115.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 142112210221 its reverse (122012211241), we get a palindrome (264124421462).

The spelling of 142112210221 in words is "one hundred forty-two billion, one hundred twelve million, two hundred ten thousand, two hundred twenty-one".