111002001221021 has 8 divisors (see below), whose sum is σ = 112357358186304. Its totient is φ = 109647072433440.

The previous prime is 111002001221009. The next prime is 111002001221063. The reversal of 111002001221021 is 120122100200111.

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

It is a cyclic number.

It is not a de Polignac number, because 111002001221021 - 2³⁴ = 110984821351837 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111002001220987 and 111002001221005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111002001221821) 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, 106522760 + ... + 107559761.

It is an arithmetic number, because the mean of its divisors is an integer number (14044669773288).

Almost surely, 2^{111002001221021} is an apocalyptic number.

It is an amenable number.

111002001221021 is a deficient number, since it is larger than the sum of its proper divisors (1355356965283).

111002001221021 is an equidigital number, since it uses as much as digits as its factorization.

111002001221021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214088851.

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

Adding to 111002001221021 its reverse (120122100200111), we get a palindrome (231124101421132).

The spelling of 111002001221021 in words is "one hundred eleven trillion, two billion, one million, two hundred twenty-one thousand, twenty-one".