111000211221 has 8 divisors (see below), whose sum is σ = 148002542080. Its totient is φ = 73999010592.

The previous prime is 111000211207. The next prime is 111000211229. The reversal of 111000211221 is 122112000111.

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

It is not a de Polignac number, because 111000211221 - 2¹³ = 111000203029 is a prime.

It is a super-2 number, since 2×111000211221² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111000211197 and 111000211206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111000211229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18016 + ... + 471513.

It is an arithmetic number, because the mean of its divisors is an integer number (18500317760).

Almost surely, 2^111000211221 is an apocalyptic number.

It is an amenable number.

111000211221 is a deficient number, since it is larger than the sum of its proper divisors (37002330859).

111000211221 is an equidigital number, since it uses as much as digits as its factorization.

111000211221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 565115.

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

Adding to 111000211221 its reverse (122112000111), we get a palindrome (233112211332).

The spelling of 111000211221 in words is "one hundred eleven billion, two hundred eleven thousand, two hundred twenty-one".