111020211100221 has 8 divisors (see below), whose sum is σ = 148130246777280. Its totient is φ = 73961824744992.

The previous prime is 111020211100217. The next prime is 111020211100283. The reversal of 111020211100221 is 122001112020111.

It is a happy number.

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

It is not a de Polignac number, because 111020211100221 - 2² = 111020211100217 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 111020211100221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111020211100021) 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, 12912325441 + ... + 12912334038.

It is an arithmetic number, because the mean of its divisors is an integer number (18516280847160).

Almost surely, 2^{111020211100221} is an apocalyptic number.

It is an amenable number.

111020211100221 is a deficient number, since it is larger than the sum of its proper divisors (37110035677059).

111020211100221 is a wasteful number, since it uses less digits than its factorization.

111020211100221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25824660915.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 111020211100221 its reverse (122001112020111), we get a palindrome (233021323120332).

The spelling of 111020211100221 in words is "one hundred eleven trillion, twenty billion, two hundred eleven million, one hundred thousand, two hundred twenty-one".