111120001221 has 8 divisors (see below), whose sum is σ = 148174695424. Its totient is φ = 74072653920.

The previous prime is 111120001211. The next prime is 111120001229. The reversal of 111120001221 is 122100021111.

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

It is not a de Polignac number, because 111120001221 - 2¹¹ = 111119999173 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 111120001197 and 111120001206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111120001229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1801336 + ... + 1862001.

It is an arithmetic number, because the mean of its divisors is an integer number (18521836928).

Almost surely, 2^111120001221 is an apocalyptic number.

It is an amenable number.

111120001221 is a deficient number, since it is larger than the sum of its proper divisors (37054694203).

111120001221 is a wasteful number, since it uses less digits than its factorization.

111120001221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3673451.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 111120001221 its reverse (122100021111), we get a palindrome (233220022332).

The spelling of 111120001221 in words is "one hundred eleven billion, one hundred twenty million, one thousand, two hundred twenty-one".