221043002120243 has 16 divisors (see below), whose sum is σ = 232027773334560. Its totient is φ = 210361342118400.

The previous prime is 221043002120219. The next prime is 221043002120251. The reversal of 221043002120243 is 342021200340122.

It is a cyclic number.

It is not a de Polignac number, because 221043002120243 - 2¹⁸ = 221043001858099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221043002120263) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 273162038 + ... + 273970043.

It is an arithmetic number, because the mean of its divisors is an integer number (14501735833410).

Almost surely, 2^{221043002120243} is an apocalyptic number.

221043002120243 is a deficient number, since it is larger than the sum of its proper divisors (10984771214317).

221043002120243 is a wasteful number, since it uses less digits than its factorization.

221043002120243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 547132358.

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 221043002120243 its reverse (342021200340122), we get a palindrome (563064202460365).

The spelling of 221043002120243 in words is "two hundred twenty-one trillion, forty-three billion, two million, one hundred twenty thousand, two hundred forty-three".