22003220231 has 4 divisors (see below), whose sum is σ = 22150893000. Its totient is φ = 21855547464.

The previous prime is 22003220171. The next prime is 22003220279. The reversal of 22003220231 is 13202230022.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22003220231 is a prime.

It is a super-2 number, since 2×22003220231² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22003220131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73836161 + ... + 73836458.

It is an arithmetic number, because the mean of its divisors is an integer number (5537723250).

Almost surely, 2^22003220231 is an apocalyptic number.

22003220231 is a deficient number, since it is larger than the sum of its proper divisors (147672769).

22003220231 is a wasteful number, since it uses less digits than its factorization.

22003220231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147672768.

The product of its (nonzero) digits is 288, while the sum is 17.

Adding to 22003220231 its reverse (13202230022), we get a palindrome (35205450253).

The spelling of 22003220231 in words is "twenty-two billion, three million, two hundred twenty thousand, two hundred thirty-one".