22011021212 has 12 divisors (see below), whose sum is σ = 38732102136. Its totient is φ = 10944706320.

The previous prime is 22011021209. The next prime is 22011021217. The reversal of 22011021212 is 21212011022.

It is a super-2 number, since 2×22011021212² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22011021217) 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, 15200258 + ... + 15201705.

It is an arithmetic number, because the mean of its divisors is an integer number (3227675178).

Almost surely, 2^22011021212 is an apocalyptic number.

It is an amenable number.

22011021212 is a deficient number, since it is larger than the sum of its proper divisors (16721080924).

22011021212 is a wasteful number, since it uses less digits than its factorization.

22011021212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30402148 (or 30402146 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 22011021212 its reverse (21212011022), we get a palindrome (43223032234).

The spelling of 22011021212 in words is "twenty-two billion, eleven million, twenty-one thousand, two hundred twelve".