22123420031 has 4 divisors (see below), whose sum is σ = 22133285592. Its totient is φ = 22113554472.

The previous prime is 22123420019. The next prime is 22123420049. The reversal of 22123420031 is 13002432122.

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 22123420031 - 2¹⁰ = 22123419007 is a prime.

It is a super-2 number, since 2×22123420031² (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 = 22123419985 and 22123420012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22123420001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4929416 + ... + 4933901.

It is an arithmetic number, because the mean of its divisors is an integer number (5533321398).

Almost surely, 2^22123420031 is an apocalyptic number.

22123420031 is a deficient number, since it is larger than the sum of its proper divisors (9865561).

22123420031 is an equidigital number, since it uses as much as digits as its factorization.

22123420031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9865560.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 22123420031 its reverse (13002432122), we get a palindrome (35125852153).

It can be divided in two parts, 2212 and 3420031, that added together give a palindrome (3422243).

The spelling of 22123420031 in words is "twenty-two billion, one hundred twenty-three million, four hundred twenty thousand, thirty-one".