1222211324401 has 2 divisors, whose sum is σ = 1222211324402. Its totient is φ = 1222211324400.

The previous prime is 1222211324387. The next prime is 1222211324449. The reversal of 1222211324401 is 1044231122221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 824146230625 + 398065093776 = 907825^2 + 630924^2 .

It is a cyclic number.

It is not a de Polignac number, because 1222211324401 - 2⁹ = 1222211323889 is a prime.

It is not a weakly prime, because it can be changed into another prime (1222211324461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611105662200 + 611105662201.

It is an arithmetic number, because the mean of its divisors is an integer number (611105662201).

Almost surely, 2^{1222211324401} is an apocalyptic number.

It is an amenable number.

1222211324401 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222211324401 is an equidigital number, since it uses as much as digits as its factorization.

1222211324401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1536, while the sum is 25.

Adding to 1222211324401 its reverse (1044231122221), we get a palindrome (2266442446622).

The spelling of 1222211324401 in words is "one trillion, two hundred twenty-two billion, two hundred eleven million, three hundred twenty-four thousand, four hundred one".