221015542143 has 8 divisors (see below), whose sum is σ = 321477152256. Its totient is φ = 133948813400.

The previous prime is 221015542129. The next prime is 221015542151. The reversal of 221015542143 is 341245510122.

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 221015542143 - 2¹² = 221015538047 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 221015542143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221015542103) 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 7 ways as a sum of consecutive naturals, for example, 3348720303 + ... + 3348720368.

It is an arithmetic number, because the mean of its divisors is an integer number (40184644032).

Almost surely, 2^221015542143 is an apocalyptic number.

221015542143 is a deficient number, since it is larger than the sum of its proper divisors (100461610113).

221015542143 is a wasteful number, since it uses less digits than its factorization.

221015542143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6697440685.

The product of its (nonzero) digits is 9600, while the sum is 30.

The spelling of 221015542143 in words is "two hundred twenty-one billion, fifteen million, five hundred forty-two thousand, one hundred forty-three".