2421897418091 has 2 divisors, whose sum is σ = 2421897418092. Its totient is φ = 2421897418090.

The previous prime is 2421897418049. The next prime is 2421897418103. The reversal of 2421897418091 is 1908147981242.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2421897418091 - 2³⁰ = 2420823676267 is a prime.

It is not a weakly prime, because it can be changed into another prime (2421897418691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1210948709045 + 1210948709046.

It is an arithmetic number, because the mean of its divisors is an integer number (1210948709046).

Almost surely, 2^{2421897418091} is an apocalyptic number.

2421897418091 is a deficient number, since it is larger than the sum of its proper divisors (1).

2421897418091 is an equidigital number, since it uses as much as digits as its factorization.

2421897418091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2322432, while the sum is 56.

The spelling of 2421897418091 in words is "two trillion, four hundred twenty-one billion, eight hundred ninety-seven million, four hundred eighteen thousand, ninety-one".