2201021131691 has 2 divisors, whose sum is σ = 2201021131692. Its totient is φ = 2201021131690.

The previous prime is 2201021131667. The next prime is 2201021131693. The reversal of 2201021131691 is 1961311201022.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2201021131691 - 2⁶ = 2201021131627 is a prime.

Together with 2201021131693, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2201021131693) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1100510565845 + 1100510565846.

It is an arithmetic number, because the mean of its divisors is an integer number (1100510565846).

Almost surely, 2^{2201021131691} is an apocalyptic number.

2201021131691 is a deficient number, since it is larger than the sum of its proper divisors (1).

2201021131691 is an equidigital number, since it uses as much as digits as its factorization.

2201021131691 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 29.

The spelling of 2201021131691 in words is "two trillion, two hundred one billion, twenty-one million, one hundred thirty-one thousand, six hundred ninety-one".