22221001031 has 4 divisors (see below), whose sum is σ = 22318036200. Its totient is φ = 22123965864.

The previous prime is 22221001007. The next prime is 22221001039. The reversal of 22221001031 is 13010012222.

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 22221001031 - 2¹⁰ = 22221000007 is a prime.

It is a super-2 number, since 2×22221001031² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22221000997 and 22221001015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22221001039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48517241 + ... + 48517698.

It is an arithmetic number, because the mean of its divisors is an integer number (5579509050).

Almost surely, 2^22221001031 is an apocalyptic number.

22221001031 is a deficient number, since it is larger than the sum of its proper divisors (97035169).

22221001031 is an equidigital number, since it uses as much as digits as its factorization.

22221001031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97035168.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 22221001031 its reverse (13010012222), we get a palindrome (35231013253).

The spelling of 22221001031 in words is "twenty-two billion, two hundred twenty-one million, one thousand, thirty-one".