111100122212 has 6 divisors (see below), whose sum is σ = 194425213878. Its totient is φ = 55550061104.

The previous prime is 111100122197. The next prime is 111100122229. The reversal of 111100122212 is 212221001111.

It can be written as a sum of positive squares in only one way, i.e., 61555594816 + 49544527396 = 248104^2 + 222586^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13887515273 + ... + 13887515280.

It is an arithmetic number, because the mean of its divisors is an integer number (32404202313).

Almost surely, 2^111100122212 is an apocalyptic number.

It is an amenable number.

111100122212 is a deficient number, since it is larger than the sum of its proper divisors (83325091666).

111100122212 is a wasteful number, since it uses less digits than its factorization.

111100122212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27775030557 (or 27775030555 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 111100122212 its reverse (212221001111), we get a palindrome (323321123323).

The spelling of 111100122212 in words is "one hundred eleven billion, one hundred million, one hundred twenty-two thousand, two hundred twelve".