111212330312102 has 4 divisors (see below), whose sum is σ = 166818495468156. Its totient is φ = 55606165156050.

The previous prime is 111212330312077. The next prime is 111212330312141. The reversal of 111212330312102 is 201213033212111.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27803082578024 + ... + 27803082578027.

It is an arithmetic number, because the mean of its divisors is an integer number (41704623867039).

Almost surely, 2^{111212330312102} is an apocalyptic number.

111212330312102 is a deficient number, since it is larger than the sum of its proper divisors (55606165156054).

111212330312102 is an equidigital number, since it uses as much as digits as its factorization.

111212330312102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55606165156053.

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 111212330312102 its reverse (201213033212111), we get a palindrome (312425363524213).

The spelling of 111212330312102 in words is "one hundred eleven trillion, two hundred twelve billion, three hundred thirty million, three hundred twelve thousand, one hundred two".