111212322212 has 12 divisors (see below), whose sum is σ = 194639195520. Its totient is φ = 55601123496.

The previous prime is 111212322173. The next prime is 111212322233. The reversal of 111212322212 is 212223212111.

It is a super-2 number, since 2×111212322212² (a number of 23 digits) contains 22 as substring.

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, 1209512 + ... + 1298207.

It is an arithmetic number, because the mean of its divisors is an integer number (16219932960).

Almost surely, 2^111212322212 is an apocalyptic number.

It is an amenable number.

111212322212 is a deficient number, since it is larger than the sum of its proper divisors (83426873308).

111212322212 is a wasteful number, since it uses less digits than its factorization.

111212322212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2518810 (or 2518808 counting only the distinct ones).

The product of its digits is 192, while the sum is 20.

Adding to 111212322212 its reverse (212223212111), we get a palindrome (323435534323).

The spelling of 111212322212 in words is "one hundred eleven billion, two hundred twelve million, three hundred twenty-two thousand, two hundred twelve".