221134442003 has 4 divisors (see below), whose sum is σ = 221771717400. Its totient is φ = 220497166608.

The previous prime is 221134441999. The next prime is 221134442027. The reversal of 221134442003 is 300244431122.

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 221134442003 - 2² = 221134441999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221134442083) 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, 318637178 + ... + 318637871.

It is an arithmetic number, because the mean of its divisors is an integer number (55442929350).

Almost surely, 2^221134442003 is an apocalyptic number.

221134442003 is a deficient number, since it is larger than the sum of its proper divisors (637275397).

221134442003 is an equidigital number, since it uses as much as digits as its factorization.

221134442003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 637275396.

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

Adding to 221134442003 its reverse (300244431122), we get a palindrome (521378873125).

The spelling of 221134442003 in words is "two hundred twenty-one billion, one hundred thirty-four million, four hundred forty-two thousand, three".