111111211022012 has 12 divisors (see below), whose sum is σ = 196261858721880. Its totient is φ = 55036394244336.

The previous prime is 111111211021973. The next prime is 111111211022039. The reversal of 111111211022012 is 210220112111111.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 129802816187 + ... + 129802817042.

It is an arithmetic number, because the mean of its divisors is an integer number (16355154893490).

Almost surely, 2^{111111211022012} is an apocalyptic number.

It is an amenable number.

111111211022012 is a deficient number, since it is larger than the sum of its proper divisors (85150647699868).

111111211022012 is a wasteful number, since it uses less digits than its factorization.

111111211022012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259605633340 (or 259605633338 counting only the distinct ones).

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

Adding to 111111211022012 its reverse (210220112111111), we get a palindrome (321331323133123).

The spelling of 111111211022012 in words is "one hundred eleven trillion, one hundred eleven billion, two hundred eleven million, twenty-two thousand, twelve".