2101301001521 has 2 divisors, whose sum is σ = 2101301001522. Its totient is φ = 2101301001520.

The previous prime is 2101301001497. The next prime is 2101301001529. The reversal of 2101301001521 is 1251001031012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2100064705600 + 1236295921 = 1449160^2 + 35161^2 .

It is a cyclic number.

It is not a de Polignac number, because 2101301001521 - 2¹⁰ = 2101301000497 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2101301001521.

It is not a weakly prime, because it can be changed into another prime (2101301001529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1050650500760 + 1050650500761.

It is an arithmetic number, because the mean of its divisors is an integer number (1050650500761).

Almost surely, 2^{2101301001521} is an apocalyptic number.

It is an amenable number.

2101301001521 is a deficient number, since it is larger than the sum of its proper divisors (1).

2101301001521 is an equidigital number, since it uses as much as digits as its factorization.

2101301001521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60, while the sum is 17.

Adding to 2101301001521 its reverse (1251001031012), we get a palindrome (3352302032533).

The spelling of 2101301001521 in words is "two trillion, one hundred one billion, three hundred one million, one thousand, five hundred twenty-one".