10021211201591 has 2 divisors, whose sum is σ = 10021211201592. Its totient is φ = 10021211201590.

The previous prime is 10021211201567. The next prime is 10021211201767. The reversal of 10021211201591 is 19510211212001.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10021211201591 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 10021211201591.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10021211201531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5010605600795 + 5010605600796.

It is an arithmetic number, because the mean of its divisors is an integer number (5010605600796).

Almost surely, 2^{10021211201591} is an apocalyptic number.

10021211201591 is a deficient number, since it is larger than the sum of its proper divisors (1).

10021211201591 is an equidigital number, since it uses as much as digits as its factorization.

10021211201591 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 360, while the sum is 26.

Adding to 10021211201591 its reverse (19510211212001), we get a palindrome (29531422413592).

The spelling of 10021211201591 in words is "ten trillion, twenty-one billion, two hundred eleven million, two hundred one thousand, five hundred ninety-one".