22311000212 has 6 divisors (see below), whose sum is σ = 39044250378. Its totient is φ = 11155500104.

The previous prime is 22311000203. The next prime is 22311000233. The reversal of 22311000212 is 21200011322.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 21923540356 + 387459856 = 148066^2 + 19684^2 .

It is a super-3 number, since 3×22311000212³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 2788875023 + ... + 2788875030.

It is an arithmetic number, because the mean of its divisors is an integer number (6507375063).

Almost surely, 2^22311000212 is an apocalyptic number.

It is an amenable number.

22311000212 is a deficient number, since it is larger than the sum of its proper divisors (16733250166).

22311000212 is a wasteful number, since it uses less digits than its factorization.

22311000212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5577750057 (or 5577750055 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 22311000212 its reverse (21200011322), we get a palindrome (43511011534).

The spelling of 22311000212 in words is "twenty-two billion, three hundred eleven million, two hundred twelve", and thus it is an aban number.