111212322102 has 48 divisors (see below), whose sum is σ = 275860339872. Its totient is φ = 31719859200.

The previous prime is 111212322079. The next prime is 111212322107. The reversal of 111212322102 is 201223212111.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111212322107) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 692149 + ... + 837552.

It is an arithmetic number, because the mean of its divisors is an integer number (5747090414).

Almost surely, 2^111212322102 is an apocalyptic number.

111212322102 is an abundant number, since it is smaller than the sum of its proper divisors (164648017770).

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

111212322102 is a wasteful number, since it uses less digits than its factorization.

111212322102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1530293 (or 1530290 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 111212322102 its reverse (201223212111), we get a palindrome (312435534213).

It can be divided in two parts, 1112123 and 22102, that added together give a square (1134225 = 1065²).

The spelling of 111212322102 in words is "one hundred eleven billion, two hundred twelve million, three hundred twenty-two thousand, one hundred two".