221444002043 has 4 divisors (see below), whose sum is σ = 241575274968. Its totient is φ = 201312729120.

The previous prime is 221444002037. The next prime is 221444002051. The reversal of 221444002043 is 340200444122.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 221444002043 - 2⁴ = 221444002027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221444002033) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10065636446 + ... + 10065636467.

It is an arithmetic number, because the mean of its divisors is an integer number (60393818742).

Almost surely, 2^221444002043 is an apocalyptic number.

221444002043 is a deficient number, since it is larger than the sum of its proper divisors (20131272925).

221444002043 is a wasteful number, since it uses less digits than its factorization.

221444002043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20131272924.

The product of its (nonzero) digits is 6144, while the sum is 26.

Adding to 221444002043 its reverse (340200444122), we get a palindrome (561644446165).

The spelling of 221444002043 in words is "two hundred twenty-one billion, four hundred forty-four million, two thousand, forty-three".