111120112212221 has 64 divisors (see below), whose sum is σ = 131089785716736. Its totient is φ = 92222616595200.

The previous prime is 111120112212139. The next prime is 111120112212229. The reversal of 111120112212221 is 122212211021111.

It is a happy number.

It is not a de Polignac number, because 111120112212221 - 2¹⁰ = 111120112211197 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 111120112212193 and 111120112212202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111120112212229) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 31452053771 + ... + 31452057303.

It is an arithmetic number, because the mean of its divisors is an integer number (2048277901824).

Almost surely, 2^{111120112212221} is an apocalyptic number.

It is an amenable number.

111120112212221 is a deficient number, since it is larger than the sum of its proper divisors (19969673504515).

111120112212221 is a wasteful number, since it uses less digits than its factorization.

111120112212221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5762.

The product of its (nonzero) digits is 64, while the sum is 20.

Adding to 111120112212221 its reverse (122212211021111), we get a palindrome (233332323233332).

The spelling of 111120112212221 in words is "one hundred eleven trillion, one hundred twenty billion, one hundred twelve million, two hundred twelve thousand, two hundred twenty-one".