111220120120011 has 16 divisors (see below), whose sum is σ = 169524445183488. Its totient is φ = 63537041764800.

The previous prime is 111220120119991. The next prime is 111220120120049. The reversal of 111220120120011 is 110021021022111.

It is a happy number.

111220120120011 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 111220120120011 - 2²¹ = 111220118022859 is a prime.

It is not an unprimeable number, because it can be changed into a prime (111220120120211) 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, 721278970 + ... + 721433151.

It is an arithmetic number, because the mean of its divisors is an integer number (10595277823968).

Almost surely, 2^{111220120120011} is an apocalyptic number.

111220120120011 is a deficient number, since it is larger than the sum of its proper divisors (58304325063477).

111220120120011 is a wasteful number, since it uses less digits than its factorization.

111220120120011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1442715802.

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

Adding to 111220120120011 its reverse (110021021022111), we get a palindrome (221241141142122).

The spelling of 111220120120011 in words is "one hundred eleven trillion, two hundred twenty billion, one hundred twenty million, one hundred twenty thousand, eleven".