10201211019491 has 2 divisors, whose sum is σ = 10201211019492. Its totient is φ = 10201211019490.

The previous prime is 10201211019487. The next prime is 10201211019529. The reversal of 10201211019491 is 19491011210201.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 10201211019491 - 2² = 10201211019487 is a prime.

It is not a weakly prime, because it can be changed into another prime (10201211019691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5100605509745 + 5100605509746.

It is an arithmetic number, because the mean of its divisors is an integer number (5100605509746).

Almost surely, 2^{10201211019491} is an apocalyptic number.

10201211019491 is a deficient number, since it is larger than the sum of its proper divisors (1).

10201211019491 is an equidigital number, since it uses as much as digits as its factorization.

10201211019491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 32.

Adding to 10201211019491 its reverse (19491011210201), we get a palindrome (29692222229692).

The spelling of 10201211019491 in words is "ten trillion, two hundred one billion, two hundred eleven million, nineteen thousand, four hundred ninety-one".