2201111310221 has 4 divisors (see below), whose sum is σ = 2215883869500. Its totient is φ = 2186338750944.

The previous prime is 2201111310199. The next prime is 2201111310241. The reversal of 2201111310221 is 1220131111022.

It is a happy number.

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 71668644100 + 2129442666121 = 267710^2 + 1459261^2 .

It is a cyclic number.

It is not a de Polignac number, because 2201111310221 - 2¹⁰ = 2201111309197 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2201111310221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2201111310241) 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, 7386279416 + ... + 7386279713.

It is an arithmetic number, because the mean of its divisors is an integer number (553970967375).

Almost surely, 2^{2201111310221} is an apocalyptic number.

It is an amenable number.

2201111310221 is a deficient number, since it is larger than the sum of its proper divisors (14772559279).

2201111310221 is a wasteful number, since it uses less digits than its factorization.

2201111310221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14772559278.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 2201111310221 its reverse (1220131111022), we get a palindrome (3421242421243).

The spelling of 2201111310221 in words is "two trillion, two hundred one billion, one hundred eleven million, three hundred ten thousand, two hundred twenty-one".