1222201112281 has 2 divisors, whose sum is σ = 1222201112282. Its totient is φ = 1222201112280.

The previous prime is 1222201112191. The next prime is 1222201112317. The reversal of 1222201112281 is 1822111022221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 971981063881 + 250220048400 = 985891^2 + 500220^2 .

It is a cyclic number.

It is not a de Polignac number, because 1222201112281 - 2¹¹ = 1222201110233 is a prime.

It is a super-2 number, since 2×1222201112281² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1222201112681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611100556140 + 611100556141.

It is an arithmetic number, because the mean of its divisors is an integer number (611100556141).

Almost surely, 2^{1222201112281} is an apocalyptic number.

It is an amenable number.

1222201112281 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222201112281 is an equidigital number, since it uses as much as digits as its factorization.

1222201112281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 512, while the sum is 25.

The spelling of 1222201112281 in words is "one trillion, two hundred twenty-two billion, two hundred one million, one hundred twelve thousand, two hundred eighty-one".