1001202220001 has 2 divisors, whose sum is σ = 1001202220002. Its totient is φ = 1001202220000.

The previous prime is 1001202219973. The next prime is 1001202220033. The reversal of 1001202220001 is 1000222021001.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 859419848401 + 141782371600 = 927049^2 + 376540^2 .

It is a cyclic number.

It is not a de Polignac number, because 1001202220001 - 2¹⁸ = 1001201957857 is a prime.

It is not a weakly prime, because it can be changed into another prime (1001202220201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500601110000 + 500601110001.

It is an arithmetic number, because the mean of its divisors is an integer number (500601110001).

Almost surely, 2^{1001202220001} is an apocalyptic number.

It is an amenable number.

1001202220001 is a deficient number, since it is larger than the sum of its proper divisors (1).

1001202220001 is an equidigital number, since it uses as much as digits as its factorization.

1001202220001 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 11.

Adding to 1001202220001 its reverse (1000222021001), we get a palindrome (2001424241002).

The spelling of 1001202220001 in words is "one trillion, one billion, two hundred two million, two hundred twenty thousand, one".