2104200106391 has 2 divisors, whose sum is σ = 2104200106392. Its totient is φ = 2104200106390.

The previous prime is 2104200106369. The next prime is 2104200106417. The reversal of 2104200106391 is 1936010024012.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2104200106391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2104200106321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1052100053195 + 1052100053196.

It is an arithmetic number, because the mean of its divisors is an integer number (1052100053196).

Almost surely, 2^{2104200106391} is an apocalyptic number.

2104200106391 is a deficient number, since it is larger than the sum of its proper divisors (1).

2104200106391 is an equidigital number, since it uses as much as digits as its factorization.

2104200106391 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 29.

The spelling of 2104200106391 in words is "two trillion, one hundred four billion, two hundred million, one hundred six thousand, three hundred ninety-one".