22145131204 has 12 divisors (see below), whose sum is σ = 44290262464. Its totient is φ = 9490770504.

The previous prime is 22145131189. The next prime is 22145131223. The reversal of 22145131204 is 40213154122.

22145131204 is an admirable number.

It is an unprimeable number.

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, 395448744 + ... + 395448799.

Almost surely, 2^22145131204 is an apocalyptic number.

It is an amenable number.

22145131204 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22145131204 is a wasteful number, since it uses less digits than its factorization.

22145131204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 790897554 (or 790897552 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

Adding to 22145131204 its reverse (40213154122), we get a palindrome (62358285326).

The spelling of 22145131204 in words is "twenty-two billion, one hundred forty-five million, one hundred thirty-one thousand, two hundred four".