111211010012 has 12 divisors (see below), whose sum is σ = 194628635880. Its totient is φ = 55602828336.

The previous prime is 111211010011. The next prime is 111211010017. The reversal of 111211010012 is 210010112111.

It is a junction number, because it is equal to n+sod(n) for n = 111211009975 and 111211010002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111211010011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 574187 + ... + 743042.

It is an arithmetic number, because the mean of its divisors is an integer number (16219052990).

Almost surely, 2^111211010012 is an apocalyptic number.

It is an amenable number.

111211010012 is a deficient number, since it is larger than the sum of its proper divisors (83417625868).

111211010012 is a wasteful number, since it uses less digits than its factorization.

111211010012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1338340 (or 1338338 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 111211010012 its reverse (210010112111), we get a palindrome (321221122123).

The spelling of 111211010012 in words is "one hundred eleven billion, two hundred eleven million, ten thousand, twelve".