4221135091 has 2 divisors, whose sum is σ = 4221135092. Its totient is φ = 4221135090.

The previous prime is 4221135077. The next prime is 4221135103. The reversal of 4221135091 is 1905311224.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4221135091 - 2⁵ = 4221135059 is a prime.

It is not a weakly prime, because it can be changed into another prime (4221135041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2110567545 + 2110567546.

It is an arithmetic number, because the mean of its divisors is an integer number (2110567546).

Almost surely, 2^4221135091 is an apocalyptic number.

4221135091 is a deficient number, since it is larger than the sum of its proper divisors (1).

4221135091 is an equidigital number, since it uses as much as digits as its factorization.

4221135091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 4221135091 is about 64970.2631286037. The cubic root of 4221135091 is about 1616.1304652116.

The spelling of 4221135091 in words is "four billion, two hundred twenty-one million, one hundred thirty-five thousand, ninety-one".