2211220220281 has 2 divisors, whose sum is σ = 2211220220282. Its totient is φ = 2211220220280.

The previous prime is 2211220220171. The next prime is 2211220220303. The reversal of 2211220220281 is 1820220221122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2185344280681 + 25875939600 = 1478291^2 + 160860^2 .

It is a cyclic number.

It is not a de Polignac number, because 2211220220281 - 2¹⁷ = 2211220089209 is a prime.

It is a super-2 number, since 2×2211220220281² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2211220223281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1105610110140 + 1105610110141.

It is an arithmetic number, because the mean of its divisors is an integer number (1105610110141).

Almost surely, 2^{2211220220281} is an apocalyptic number.

It is an amenable number.

2211220220281 is a deficient number, since it is larger than the sum of its proper divisors (1).

2211220220281 is an equidigital number, since it uses as much as digits as its factorization.

2211220220281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1024, while the sum is 25.

The spelling of 2211220220281 in words is "two trillion, two hundred eleven billion, two hundred twenty million, two hundred twenty thousand, two hundred eighty-one".