221423301143 has 8 divisors (see below), whose sum is σ = 241774924800. Its totient is φ = 201108716280.

The previous prime is 221423301137. The next prime is 221423301157. The reversal of 221423301143 is 341103324122.

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

It is a cyclic number.

It is not a de Polignac number, because 221423301143 - 2¹² = 221423297047 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 (221423301103) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9247193 + ... + 9271106.

It is an arithmetic number, because the mean of its divisors is an integer number (30221865600).

Almost surely, 2^221423301143 is an apocalyptic number.

221423301143 is a deficient number, since it is larger than the sum of its proper divisors (20351623657).

221423301143 is a wasteful number, since it uses less digits than its factorization.

221423301143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18519397.

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 221423301143 its reverse (341103324122), we get a palindrome (562526625265).

The spelling of 221423301143 in words is "two hundred twenty-one billion, four hundred twenty-three million, three hundred one thousand, one hundred forty-three".