22011443212 has 24 divisors (see below), whose sum is σ = 42030091152. Its totient is φ = 10003238400.

The previous prime is 22011443137. The next prime is 22011443221. The reversal of 22011443212 is 21234411022.

It is a super-3 number, since 3×22011443212³ (a number of 32 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 190912 + ... + 283672.

It is an arithmetic number, because the mean of its divisors is an integer number (1751253798).

Almost surely, 2^22011443212 is an apocalyptic number.

22011443212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

22011443212 is a deficient number, since it is larger than the sum of its proper divisors (20018647940).

22011443212 is a wasteful number, since it uses less digits than its factorization.

22011443212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98169 (or 98167 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 22011443212 its reverse (21234411022), we get a palindrome (43245854234).

The spelling of 22011443212 in words is "twenty-two billion, eleven million, four hundred forty-three thousand, two hundred twelve".