111212011222 has 24 divisors (see below), whose sum is σ = 182425804560. Its totient is φ = 50820400800.

The previous prime is 111212011217. The next prime is 111212011241. The reversal of 111212011222 is 222110212111.

It is a super-2 number, since 2×111212011222² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 111212011196 and 111212011205.

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 1594722 + ... + 1662997.

It is an arithmetic number, because the mean of its divisors is an integer number (7601075190).

Almost surely, 2^111212011222 is an apocalyptic number.

111212011222 is a deficient number, since it is larger than the sum of its proper divisors (71213793338).

111212011222 is a wasteful number, since it uses less digits than its factorization.

111212011222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3257848 (or 3257835 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 111212011222 its reverse (222110212111), we get a palindrome (333322223333).

The spelling of 111212011222 in words is "one hundred eleven billion, two hundred twelve million, eleven thousand, two hundred twenty-two".