221231343010342 has 48 divisors (see below), whose sum is σ = 403939620971280. Its totient is φ = 90510324270912.

The previous prime is 221231343010313. The next prime is 221231343010343. The reversal of 221231343010342 is 243010343132122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221231343010343) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 575397492 + ... + 575781847.

It is an arithmetic number, because the mean of its divisors is an integer number (8415408770235).

Almost surely, 2^{221231343010342} is an apocalyptic number.

221231343010342 is a deficient number, since it is larger than the sum of its proper divisors (182708277960938).

221231343010342 is a wasteful number, since it uses less digits than its factorization.

221231343010342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1151179445 (or 1151179438 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 31.

Adding to 221231343010342 its reverse (243010343132122), we get a palindrome (464241686142464).

The spelling of 221231343010342 in words is "two hundred twenty-one trillion, two hundred thirty-one billion, three hundred forty-three million, ten thousand, three hundred forty-two".