22040232212 has 6 divisors (see below), whose sum is σ = 38570406378. Its totient is φ = 11020116104.

The previous prime is 22040232209. The next prime is 22040232257. The reversal of 22040232212 is 21223204022.

It can be written as a sum of positive squares in only one way, i.e., 18478052356 + 3562179856 = 135934^2 + 59684^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2755029023 + ... + 2755029030.

It is an arithmetic number, because the mean of its divisors is an integer number (6428401063).

Almost surely, 2^22040232212 is an apocalyptic number.

It is an amenable number.

22040232212 is a deficient number, since it is larger than the sum of its proper divisors (16530174166).

22040232212 is a wasteful number, since it uses less digits than its factorization.

22040232212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5510058057 (or 5510058055 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 22040232212 its reverse (21223204022), we get a palindrome (43263436234).

The spelling of 22040232212 in words is "twenty-two billion, forty million, two hundred thirty-two thousand, two hundred twelve".