2120211221701 has 2 divisors, whose sum is σ = 2120211221702. Its totient is φ = 2120211221700.

The previous prime is 2120211221683. The next prime is 2120211221717. The reversal of 2120211221701 is 1071221120212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1723404456225 + 396806765476 = 1312785^2 + 629926^2 .

It is a cyclic number.

It is not a de Polignac number, because 2120211221701 - 2¹⁹ = 2120210697413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2120211221761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060105610850 + 1060105610851.

It is an arithmetic number, because the mean of its divisors is an integer number (1060105610851).

Almost surely, 2^{2120211221701} is an apocalyptic number.

It is an amenable number.

2120211221701 is a deficient number, since it is larger than the sum of its proper divisors (1).

2120211221701 is an equidigital number, since it uses as much as digits as its factorization.

2120211221701 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 224, while the sum is 22.

Adding to 2120211221701 its reverse (1071221120212), we get a palindrome (3191432341913).

The spelling of 2120211221701 in words is "two trillion, one hundred twenty billion, two hundred eleven million, two hundred twenty-one thousand, seven hundred one".