1111201002221 has 4 divisors (see below), whose sum is σ = 1122202992444. Its totient is φ = 1100199012000.

The previous prime is 1111201002217. The next prime is 1111201002227. The reversal of 1111201002221 is 1222001021111.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 794219616100 + 316981386121 = 891190^2 + 563011^2 .

It is a cyclic number.

It is not a de Polignac number, because 1111201002221 - 2² = 1111201002217 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1111201002196 and 1111201002205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111201002227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5500994960 + ... + 5500995161.

It is an arithmetic number, because the mean of its divisors is an integer number (280550748111).

Almost surely, 2^{1111201002221} is an apocalyptic number.

It is an amenable number.

1111201002221 is a deficient number, since it is larger than the sum of its proper divisors (11001990223).

1111201002221 is a wasteful number, since it uses less digits than its factorization.

1111201002221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11001990222.

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

Adding to 1111201002221 its reverse (1222001021111), we get a palindrome (2333202023332).

The spelling of 1111201002221 in words is "one trillion, one hundred eleven billion, two hundred one million, two thousand, two hundred twenty-one".