111200020021221 has 8 divisors (see below), whose sum is σ = 148266833184384. Its totient is φ = 74133276769440.

The previous prime is 111200020021213. The next prime is 111200020021313. The reversal of 111200020021221 is 122120020002111.

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

It is not a de Polignac number, because 111200020021221 - 2³ = 111200020021213 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 111200020021221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111200028021221) 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, 13646496 + ... + 20214521.

It is an arithmetic number, because the mean of its divisors is an integer number (18533354148048).

Almost surely, 2^{111200020021221} is an apocalyptic number.

It is an amenable number.

111200020021221 is a deficient number, since it is larger than the sum of its proper divisors (37066813163163).

111200020021221 is a wasteful number, since it uses less digits than its factorization.

111200020021221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34955691.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 111200020021221 its reverse (122120020002111), we get a palindrome (233320040023332).

The spelling of 111200020021221 in words is "one hundred eleven trillion, two hundred billion, twenty million, twenty-one thousand, two hundred twenty-one".