221442121143 has 12 divisors (see below), whose sum is σ = 319934043000. Its totient is φ = 147594295536.

The previous prime is 221442121133. The next prime is 221442121151. The reversal of 221442121143 is 341121244122.

221442121143 is a `hidden beast` number, since 2 + 2 + 1 + 442 + 1 + 211 + 4 + 3 = 666.

It is not a de Polignac number, because 221442121143 - 2²¹ = 221440023991 is a prime.

It is a super-2 number, since 2×221442121143² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221442121133) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2773893 + ... + 2852606.

It is an arithmetic number, because the mean of its divisors is an integer number (26661170250).

Almost surely, 2^221442121143 is an apocalyptic number.

221442121143 is a deficient number, since it is larger than the sum of its proper divisors (98491921857).

221442121143 is a wasteful number, since it uses less digits than its factorization.

221442121143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5630878 (or 5630875 counting only the distinct ones).

The product of its digits is 3072, while the sum is 27.

Adding to 221442121143 its reverse (341121244122), we get a palindrome (562563365265).

The spelling of 221442121143 in words is "two hundred twenty-one billion, four hundred forty-two million, one hundred twenty-one thousand, one hundred forty-three".