22201111002001 has 2 divisors, whose sum is σ = 22201111002002. Its totient is φ = 22201111002000.

The previous prime is 22201111001969. The next prime is 22201111002011. The reversal of 22201111002001 is 10020011110222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12542540987025 + 9658570014976 = 3541545^2 + 3107824^2 .

It is a cyclic number.

It is not a de Polignac number, because 22201111002001 - 2⁵ = 22201111001969 is a prime.

It is not a weakly prime, because it can be changed into another prime (22201111002011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11100555501000 + 11100555501001.

It is an arithmetic number, because the mean of its divisors is an integer number (11100555501001).

Almost surely, 2^{22201111002001} is an apocalyptic number.

It is an amenable number.

22201111002001 is a deficient number, since it is larger than the sum of its proper divisors (1).

22201111002001 is an equidigital number, since it uses as much as digits as its factorization.

22201111002001 is an odious number, because the sum of its binary digits is odd.

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

Adding to 22201111002001 its reverse (10020011110222), we get a palindrome (32221122112223).

The spelling of 22201111002001 in words is "twenty-two trillion, two hundred one billion, one hundred eleven million, two thousand, one".