22145442412 has 12 divisors (see below), whose sum is σ = 38756367496. Its totient is φ = 11072194560.

The previous prime is 22145442323. The next prime is 22145442413. The reversal of 22145442412 is 21424454122.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (22145442413) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27978 + ... + 212305.

Almost surely, 2^22145442412 is an apocalyptic number.

It is an amenable number.

22145442412 is a deficient number, since it is larger than the sum of its proper divisors (16610925084).

22145442412 is a wasteful number, since it uses less digits than its factorization.

22145442412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263328 (or 263326 counting only the distinct ones).

The product of its digits is 20480, while the sum is 31.

Adding to 22145442412 its reverse (21424454122), we get a palindrome (43569896534).

The spelling of 22145442412 in words is "twenty-two billion, one hundred forty-five million, four hundred forty-two thousand, four hundred twelve".