1222201110001 has 2 divisors, whose sum is σ = 1222201110002. Its totient is φ = 1222201110000.

The previous prime is 1222201109977. The next prime is 1222201110019. The reversal of 1222201110001 is 1000111022221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 621574560000 + 600626550001 = 788400^2 + 775001^2 .

It is an emirp because it is prime and its reverse (1000111022221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1222201110001 - 2¹³ = 1222201101809 is a prime.

It is not a weakly prime, because it can be changed into another prime (1222201110041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611100555000 + 611100555001.

It is an arithmetic number, because the mean of its divisors is an integer number (611100555001).

Almost surely, 2^{1222201110001} is an apocalyptic number.

It is an amenable number.

1222201110001 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222201110001 is an equidigital number, since it uses as much as digits as its factorization.

1222201110001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1222201110001 its reverse (1000111022221), we get a palindrome (2222312132222).

The spelling of 1222201110001 in words is "one trillion, two hundred twenty-two billion, two hundred one million, one hundred ten thousand, one".