221131200203 has 16 divisors (see below), whose sum is σ = 236826944640. Its totient is φ = 205735259136.

The previous prime is 221131200181. The next prime is 221131200233. The reversal of 221131200203 is 302002131122.

It is a cyclic number.

It is not a de Polignac number, because 221131200203 - 2²² = 221127005899 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221131200233) 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, 7221401 + ... + 7251957.

It is an arithmetic number, because the mean of its divisors is an integer number (14801684040).

Almost surely, 2^221131200203 is an apocalyptic number.

221131200203 is a deficient number, since it is larger than the sum of its proper divisors (15695744437).

221131200203 is a wasteful number, since it uses less digits than its factorization.

221131200203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35446.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 221131200203 its reverse (302002131122), we get a palindrome (523133331325).

The spelling of 221131200203 in words is "two hundred twenty-one billion, one hundred thirty-one million, two hundred thousand, two hundred three".