2201127278321 has 2 divisors, whose sum is σ = 2201127278322. Its totient is φ = 2201127278320.

The previous prime is 2201127278297. The next prime is 2201127278333. The reversal of 2201127278321 is 1238727211022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2184720486400 + 16406791921 = 1478080^2 + 128089^2 .

It is a cyclic number.

It is not a de Polignac number, because 2201127278321 - 2¹⁴ = 2201127261937 is a prime.

It is a super-2 number, since 2×2201127278321² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2201127278351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1100563639160 + 1100563639161.

It is an arithmetic number, because the mean of its divisors is an integer number (1100563639161).

Almost surely, 2^{2201127278321} is an apocalyptic number.

It is an amenable number.

2201127278321 is a deficient number, since it is larger than the sum of its proper divisors (1).

2201127278321 is an equidigital number, since it uses as much as digits as its factorization.

2201127278321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 37632, while the sum is 38.

The spelling of 2201127278321 in words is "two trillion, two hundred one billion, one hundred twenty-seven million, two hundred seventy-eight thousand, three hundred twenty-one".