111120221221011 has 12 divisors (see below), whose sum is σ = 160507316395192. Its totient is φ = 74079995086656.

The previous prime is 111120221220997. The next prime is 111120221221021. The reversal of 111120221221011 is 110122122021111.

It is a happy number.

111120221221011 is a `hidden beast` number, since 111 + 120 + 2 + 212 + 210 + 11 = 666.

It is not a de Polignac number, because 111120221221011 - 2¹⁵ = 111120221188243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111120221221021) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7989526 + ... + 16913691.

Almost surely, 2^{111120221221011} is an apocalyptic number.

111120221221011 is a deficient number, since it is larger than the sum of its proper divisors (49387095174181).

111120221221011 is a wasteful number, since it uses less digits than its factorization.

111120221221011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25399010 (or 25399007 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 111120221221011 its reverse (110122122021111), we get a palindrome (221242343242122).

The spelling of 111120221221011 in words is "one hundred eleven trillion, one hundred twenty billion, two hundred twenty-one million, two hundred twenty-one thousand, eleven".