10021211200491 has 4 divisors (see below), whose sum is σ = 13361614933992. Its totient is φ = 6680807466992.

The previous prime is 10021211200463. The next prime is 10021211200499. The reversal of 10021211200491 is 19400211212001.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 10021211200491 - 2⁵ = 10021211200459 is a prime.

It is not an unprimeable number, because it can be changed into a prime (10021211200499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1670201866746 + ... + 1670201866751.

It is an arithmetic number, because the mean of its divisors is an integer number (3340403733498).

Almost surely, 2^{10021211200491} is an apocalyptic number.

10021211200491 is a deficient number, since it is larger than the sum of its proper divisors (3340403733501).

10021211200491 is an equidigital number, since it uses as much as digits as its factorization.

10021211200491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3340403733500.

The product of its (nonzero) digits is 288, while the sum is 24.

Adding to 10021211200491 its reverse (19400211212001), we get a palindrome (29421422412492).

The spelling of 10021211200491 in words is "ten trillion, twenty-one billion, two hundred eleven million, two hundred thousand, four hundred ninety-one".