2100536721571 has 2 divisors, whose sum is σ = 2100536721572. Its totient is φ = 2100536721570.

The previous prime is 2100536721527. The next prime is 2100536721589. The reversal of 2100536721571 is 1751276350012.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2100536721571 - 2¹⁷ = 2100536590499 is a prime.

It is not a weakly prime, because it can be changed into another prime (2100536721271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1050268360785 + 1050268360786.

It is an arithmetic number, because the mean of its divisors is an integer number (1050268360786).

Almost surely, 2^{2100536721571} is an apocalyptic number.

2100536721571 is a deficient number, since it is larger than the sum of its proper divisors (1).

2100536721571 is an equidigital number, since it uses as much as digits as its factorization.

2100536721571 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 88200, while the sum is 40.

The spelling of 2100536721571 in words is "two trillion, one hundred billion, five hundred thirty-six million, seven hundred twenty-one thousand, five hundred seventy-one".