2001221102701 has 2 divisors, whose sum is σ = 2001221102702. Its totient is φ = 2001221102700.

The previous prime is 2001221102689. The next prime is 2001221102707. The reversal of 2001221102701 is 1072011221002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1029565355625 + 971655747076 = 1014675^2 + 985726^2 .

It is a cyclic number.

It is not a de Polignac number, because 2001221102701 - 2¹¹ = 2001221100653 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2001221102707) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1000610551350 + 1000610551351.

It is an arithmetic number, because the mean of its divisors is an integer number (1000610551351).

Almost surely, 2^{2001221102701} is an apocalyptic number.

It is an amenable number.

2001221102701 is a deficient number, since it is larger than the sum of its proper divisors (1).

2001221102701 is an equidigital number, since it uses as much as digits as its factorization.

2001221102701 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 112, while the sum is 19.

Adding to 2001221102701 its reverse (1072011221002), we get a palindrome (3073232323703).

The spelling of 2001221102701 in words is "two trillion, one billion, two hundred twenty-one million, one hundred two thousand, seven hundred one".