111012122112021 has 16 divisors (see below), whose sum is σ = 177113357216320. Its totient is φ = 68315152068720.

The previous prime is 111012122112019. The next prime is 111012122112049. The reversal of 111012122112021 is 120211221210111.

It is a happy number.

It is not a de Polignac number, because 111012122112021 - 2¹ = 111012122112019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111012122111985 and 111012122112003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111012122119021) 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, 158136925735 + ... + 158136926436.

It is an arithmetic number, because the mean of its divisors is an integer number (11069584826020).

Almost surely, 2^{111012122112021} is an apocalyptic number.

It is an amenable number.

111012122112021 is a deficient number, since it is larger than the sum of its proper divisors (66101235104299).

111012122112021 is a wasteful number, since it uses less digits than its factorization.

111012122112021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 316273852193 (or 316273852187 counting only the distinct ones).

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

Adding to 111012122112021 its reverse (120211221210111), we get a palindrome (231223343322132).

The spelling of 111012122112021 in words is "one hundred eleven trillion, twelve billion, one hundred twenty-two million, one hundred twelve thousand, twenty-one".