111212001110221 has 8 divisors (see below), whose sum is σ = 121323921285600. Its totient is φ = 101100370644240.

The previous prime is 111212001110209. The next prime is 111212001110227. The reversal of 111212001110221 is 122011100212111.

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

It is a de Polignac number, because none of the positive numbers 2^k-111212001110221 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 111212001110195 and 111212001110204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111212001110227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71624311 + ... + 73160548.

It is an arithmetic number, because the mean of its divisors is an integer number (15165490160700).

Almost surely, 2^{111212001110221} is an apocalyptic number.

111212001110221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

111212001110221 is a deficient number, since it is larger than the sum of its proper divisors (10111920175379).

111212001110221 is a wasteful number, since it uses less digits than its factorization.

111212001110221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144854699.

The product of its (nonzero) digits is 16, while the sum is 16.

Adding to 111212001110221 its reverse (122011100212111), we get a palindrome (233223101322332).

The spelling of 111212001110221 in words is "one hundred eleven trillion, two hundred twelve billion, one million, one hundred ten thousand, two hundred twenty-one".