111110002021221 has 16 divisors (see below), whose sum is σ = 169677747136128. Its totient is φ = 63353704276800.

The previous prime is 111110002021171. The next prime is 111110002021223. The reversal of 111110002021221 is 122120200011111.

It is a happy number.

It is not a de Polignac number, because 111110002021221 - 2⁶ = 111110002021157 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 111110002021221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111110002021223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5738550490 + ... + 5738569851.

It is an arithmetic number, because the mean of its divisors is an integer number (10604859196008).

Almost surely, 2^{111110002021221} is an apocalyptic number.

It is an amenable number.

111110002021221 is a deficient number, since it is larger than the sum of its proper divisors (58567745114907).

111110002021221 is a wasteful number, since it uses less digits than its factorization.

111110002021221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11477120812.

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

Adding to 111110002021221 its reverse (122120200011111), we get a palindrome (233230202032332).

The spelling of 111110002021221 in words is "one hundred eleven trillion, one hundred ten billion, two million, twenty-one thousand, two hundred twenty-one".