111022011212 has 96 divisors (see below), whose sum is σ = 241760762880. Its totient is φ = 43549332480.

The previous prime is 111022011151. The next prime is 111022011227. The reversal of 111022011212 is 212110220111.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2221928 + ... + 2271344.

It is an arithmetic number, because the mean of its divisors is an integer number (2518341280).

Almost surely, 2^111022011212 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 111022011212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (120880381440).

111022011212 is an abundant number, since it is smaller than the sum of its proper divisors (130738751668).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

111022011212 is a wasteful number, since it uses less digits than its factorization.

111022011212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49591 (or 49589 counting only the distinct ones).

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

Adding to 111022011212 its reverse (212110220111), we get a palindrome (323132231323).

The spelling of 111022011212 in words is "one hundred eleven billion, twenty-two million, eleven thousand, two hundred twelve".