111011011221212 has 6 divisors (see below), whose sum is σ = 194269269637128. Its totient is φ = 55505505610604.

The previous prime is 111011011221139. The next prime is 111011011221301. The reversal of 111011011221212 is 212122110110111.

It is a super-2 number, since 2×111011011221212² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13876376402648 + ... + 13876376402655.

It is an arithmetic number, because the mean of its divisors is an integer number (32378211606188).

Almost surely, 2^{111011011221212} is an apocalyptic number.

It is an amenable number.

111011011221212 is a deficient number, since it is larger than the sum of its proper divisors (83258258415916).

111011011221212 is a wasteful number, since it uses less digits than its factorization.

111011011221212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27752752805307 (or 27752752805305 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 111011011221212 its reverse (212122110110111), we get a palindrome (323133121331323).

The spelling of 111011011221212 in words is "one hundred eleven trillion, eleven billion, eleven million, two hundred twenty-one thousand, two hundred twelve".