22402012442 has 12 divisors (see below), whose sum is σ = 34082981898. Its totient is φ = 11043240600.

The previous prime is 22402012441. The next prime is 22402012483. The reversal of 22402012442 is 24421020422.

It can be written as a sum of positive squares in only one way, i.e., 16533073561 + 5868938881 = 128581^2 + 76609^2 .

It is a super-2 number, since 2×22402012442² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22402012441) 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 5 ways as a sum of consecutive naturals, for example, 1100909 + ... + 1121072.

Almost surely, 2^22402012442 is an apocalyptic number.

22402012442 is a deficient number, since it is larger than the sum of its proper divisors (11680969456).

22402012442 is an equidigital number, since it uses as much as digits as its factorization.

22402012442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2222125 (or 2222054 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 23.

Adding to 22402012442 its reverse (24421020422), we get a palindrome (46823032864).

The spelling of 22402012442 in words is "twenty-two billion, four hundred two million, twelve thousand, four hundred forty-two".