111221111022212 has 96 divisors (see below), whose sum is σ = 201519935769600. Its totient is φ = 53676919296000.

The previous prime is 111221111022199. The next prime is 111221111022257. The reversal of 111221111022212 is 212220111122111.

It is a happy number.

111221111022212 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4607897408 + ... + 4607921544.

It is an arithmetic number, because the mean of its divisors is an integer number (2099165997600).

Almost surely, 2^{111221111022212} is an apocalyptic number.

It is an amenable number.

111221111022212 is a deficient number, since it is larger than the sum of its proper divisors (90298824747388).

111221111022212 is a wasteful number, since it uses less digits than its factorization.

111221111022212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25173 (or 25171 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 20.

Adding to 111221111022212 its reverse (212220111122111), we get a palindrome (323441222144323).

The spelling of 111221111022212 in words is "one hundred eleven trillion, two hundred twenty-one billion, one hundred eleven million, twenty-two thousand, two hundred twelve".