111212001220323 has 16 divisors (see below), whose sum is σ = 153675804828672. Its totient is φ = 71463822900000.

The previous prime is 111212001220321. The next prime is 111212001220339. The reversal of 111212001220323 is 323022100212111.

It is not a de Polignac number, because 111212001220323 - 2¹ = 111212001220321 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 111212001220323.

It is not an unprimeable number, because it can be changed into a prime (111212001220321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2382104088 + ... + 2382150773.

It is an arithmetic number, because the mean of its divisors is an integer number (9604737801792).

Almost surely, 2^{111212001220323} is an apocalyptic number.

111212001220323 is a deficient number, since it is larger than the sum of its proper divisors (42463803608349).

111212001220323 is a wasteful number, since it uses less digits than its factorization.

111212001220323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4764255146.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 111212001220323 its reverse (323022100212111), we get a palindrome (434234101432434).

The spelling of 111212001220323 in words is "one hundred eleven trillion, two hundred twelve billion, one million, two hundred twenty thousand, three hundred twenty-three".