111220110012021 has 8 divisors (see below), whose sum is σ = 148450072923744. Its totient is φ = 74068443554160.

The previous prime is 111220110011999. The next prime is 111220110012047. The reversal of 111220110012021 is 120210011022111.

It is a happy number.

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

It is not a de Polignac number, because 111220110012021 - 2⁶ = 111220110011957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111220110002021) 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, 19574110150 + ... + 19574115831.

It is an arithmetic number, because the mean of its divisors is an integer number (18556259115468).

Almost surely, 2^{111220110012021} is an apocalyptic number.

It is an amenable number.

111220110012021 is a deficient number, since it is larger than the sum of its proper divisors (37229962911723).

111220110012021 is an equidigital number, since it uses as much as digits as its factorization.

111220110012021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39148226931.

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

Adding to 111220110012021 its reverse (120210011022111), we get a palindrome (231430121034132).

The spelling of 111220110012021 in words is "one hundred eleven trillion, two hundred twenty billion, one hundred ten million, twelve thousand, twenty-one".