111112100022212 has 6 divisors (see below), whose sum is σ = 194446175038878. Its totient is φ = 55556050011104.

The previous prime is 111112100022211. The next prime is 111112100022233. The reversal of 111112100022212 is 212220001211111.

It can be written as a sum of positive squares in only one way, i.e., 74745603966916 + 36366496055296 = 8645554^2 + 6030464^2 .

It is not an unprimeable number, because it can be changed into a prime (111112100022211) by changing a digit.

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 as a sum of consecutive naturals, namely, 13889012502773 + ... + 13889012502780.

It is an arithmetic number, because the mean of its divisors is an integer number (32407695839813).

Almost surely, 2^{111112100022212} is an apocalyptic number.

It is an amenable number.

111112100022212 is a deficient number, since it is larger than the sum of its proper divisors (83334075016666).

111112100022212 is a wasteful number, since it uses less digits than its factorization.

111112100022212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27778025005557 (or 27778025005555 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 111112100022212 its reverse (212220001211111), we get a palindrome (323332101233323).

The spelling of 111112100022212 in words is "one hundred eleven trillion, one hundred twelve billion, one hundred million, twenty-two thousand, two hundred twelve".