111122001222221 has 8 divisors (see below), whose sum is σ = 121225201466688. Its totient is φ = 101019001000000.

The previous prime is 111122001222181. The next prime is 111122001222229. The reversal of 111122001222221 is 122222100221111.

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

It is a cyclic number.

It is not a de Polignac number, because 111122001222221 - 2¹⁴ = 111122001205837 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 111122001222193 and 111122001222202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111122001222229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48842780 + ... + 51067221.

It is an arithmetic number, because the mean of its divisors is an integer number (15153150183336).

Almost surely, 2^{111122001222221} is an apocalyptic number.

111122001222221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

111122001222221 is a deficient number, since it is larger than the sum of its proper divisors (10103200244467).

111122001222221 is a wasteful number, since it uses less digits than its factorization.

111122001222221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100011123.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 111122001222221 its reverse (122222100221111), we get a palindrome (233344101443332).

The spelling of 111122001222221 in words is "one hundred eleven trillion, one hundred twenty-two billion, one million, two hundred twenty-two thousand, two hundred twenty-one".