111012032122021 has 2 divisors, whose sum is σ = 111012032122022. Its totient is φ = 111012032122020.

The previous prime is 111012032122009. The next prime is 111012032122051. The reversal of 111012032122021 is 120221230210111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 105592867153921 + 5419164968100 = 10275839^2 + 2327910^2 .

It is a cyclic number.

It is not a de Polignac number, because 111012032122021 - 2¹⁵ = 111012032089253 is a prime.

It is a super-3 number, since 3×111012032122021³ (a number of 43 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 111012032122021.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111012032122051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55506016061010 + 55506016061011.

It is an arithmetic number, because the mean of its divisors is an integer number (55506016061011).

Almost surely, 2^{111012032122021} is an apocalyptic number.

It is an amenable number.

111012032122021 is a deficient number, since it is larger than the sum of its proper divisors (1).

111012032122021 is an equidigital number, since it uses as much as digits as its factorization.

111012032122021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 111012032122021 its reverse (120221230210111), we get a palindrome (231233262332132).

The spelling of 111012032122021 in words is "one hundred eleven trillion, twelve billion, thirty-two million, one hundred twenty-two thousand, twenty-one".