111201001002221 has 8 divisors (see below), whose sum is σ = 120220896627384. Its totient is φ = 102247672872960.

The previous prime is 111201001002211. The next prime is 111201001002269. The reversal of 111201001002221 is 122200100102111.

It can be written as a sum of positive squares in 4 ways, for example, as 27767482704196 + 83433518298025 = 5269486^2 + 9134195^2 .

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 111201001002221 - 2¹⁸ = 111201000740077 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111201001002196 and 111201001002205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111201001002211) 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, 16641870500 + ... + 16641877181.

It is an arithmetic number, because the mean of its divisors is an integer number (15027612078423).

Almost surely, 2^{111201001002221} is an apocalyptic number.

It is an amenable number.

111201001002221 is a deficient number, since it is larger than the sum of its proper divisors (9019895625163).

111201001002221 is a wasteful number, since it uses less digits than its factorization.

111201001002221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33283747951.

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

Adding to 111201001002221 its reverse (122200100102111), we get a palindrome (233401101104332).

The spelling of 111201001002221 in words is "one hundred eleven trillion, two hundred one billion, one million, two thousand, two hundred twenty-one".