111002020211021 has 8 divisors (see below), whose sum is σ = 113043379176600. Its totient is φ = 108967811365440.

The previous prime is 111002020210973. The next prime is 111002020211087. The reversal of 111002020211021 is 120112020200111.

It can be written as a sum of positive squares in 4 ways, for example, as 9383745624100 + 101618274586921 = 3063290^2 + 10080589^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111002020211021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111002020210987 and 111002020211005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111002020211221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1787498666 + ... + 1787560763.

It is an arithmetic number, because the mean of its divisors is an integer number (14130422397075).

Almost surely, 2^{111002020211021} is an apocalyptic number.

It is an amenable number.

111002020211021 is a deficient number, since it is larger than the sum of its proper divisors (2041358965579).

111002020211021 is an equidigital number, since it uses as much as digits as its factorization.

111002020211021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3575059999.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 111002020211021 its reverse (120112020200111), we get a palindrome (231114040411132).

The spelling of 111002020211021 in words is "one hundred eleven trillion, two billion, twenty million, two hundred eleven thousand, twenty-one".