111211012102 has 8 divisors (see below), whose sum is σ = 167281189200. Its totient is φ = 55450615704.

The previous prime is 111211012079. The next prime is 111211012103. The reversal of 111211012102 is 201210112111.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111211012103) 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, 77444277 + ... + 77445712.

It is an arithmetic number, because the mean of its divisors is an integer number (20910148650).

Almost surely, 2^111211012102 is an apocalyptic number.

111211012102 is a deficient number, since it is larger than the sum of its proper divisors (56070177098).

111211012102 is a wasteful number, since it uses less digits than its factorization.

111211012102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154890350.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 111211012102 its reverse (201210112111), we get a palindrome (312421124213).

The spelling of 111211012102 in words is "one hundred eleven billion, two hundred eleven million, twelve thousand, one hundred two".