2421040991 has 2 divisors, whose sum is σ = 2421040992. Its totient is φ = 2421040990.

The previous prime is 2421040949. The next prime is 2421041011. The reversal of 2421040991 is 1990401242.

2421040991 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2421040991 - 2¹⁰ = 2421039967 is a prime.

It is a super-2 number, since 2×2421040991² = 11722878960204524162, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2421040291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1210520495 + 1210520496.

It is an arithmetic number, because the mean of its divisors is an integer number (1210520496).

Almost surely, 2^2421040991 is an apocalyptic number.

2421040991 is a deficient number, since it is larger than the sum of its proper divisors (1).

2421040991 is an equidigital number, since it uses as much as digits as its factorization.

2421040991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 2421040991 is about 49204.0749430370. The cubic root of 2421040991 is about 1342.7671693328.

The spelling of 2421040991 in words is "two billion, four hundred twenty-one million, forty thousand, nine hundred ninety-one".