111211211122102 has 32 divisors (see below), whose sum is σ = 212392763956800. Its totient is φ = 42478552787328.

The previous prime is 111211211122013. The next prime is 111211211122139. The reversal of 111211211122102 is 201221112112111.

It is a self number, because there is not a number n which added to its sum of digits gives 111211211122102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10535350077 + ... + 10535360632.

It is an arithmetic number, because the mean of its divisors is an integer number (6637273873650).

Almost surely, 2^{111211211122102} is an apocalyptic number.

111211211122102 is a deficient number, since it is larger than the sum of its proper divisors (101181552834698).

111211211122102 is a wasteful number, since it uses less digits than its factorization.

111211211122102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21070710760.

The product of its (nonzero) digits is 32, while the sum is 19.

Adding to 111211211122102 its reverse (201221112112111), we get a palindrome (312432323234213).

Subtracting 111211211122102 from its reverse (201221112112111), we obtain a palindrome (90009900990009).

The spelling of 111211211122102 in words is "one hundred eleven trillion, two hundred eleven billion, two hundred eleven million, one hundred twenty-two thousand, one hundred two".