2201121173 has 2 divisors, whose sum is σ = 2201121174. Its totient is φ = 2201121172.

The previous prime is 2201121113. The next prime is 2201121259. The reversal of 2201121173 is 3711211022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1235030449 + 966090724 = 35143^2 + 31082^2 .

It is a cyclic number.

It is not a de Polignac number, because 2201121173 - 2¹⁰ = 2201120149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2201121103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1100560586 + 1100560587.

It is an arithmetic number, because the mean of its divisors is an integer number (1100560587).

Almost surely, 2^2201121173 is an apocalyptic number.

It is an amenable number.

2201121173 is a deficient number, since it is larger than the sum of its proper divisors (1).

2201121173 is an equidigital number, since it uses as much as digits as its factorization.

2201121173 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 168, while the sum is 20.

The square root of 2201121173 is about 46916.1078202359. The cubic root of 2201121173 is about 1300.8123469082.

Adding to 2201121173 its reverse (3711211022), we get a palindrome (5912332195).

The spelling of 2201121173 in words is "two billion, two hundred one million, one hundred twenty-one thousand, one hundred seventy-three".