12421333091 has 2 divisors, whose sum is σ = 12421333092. Its totient is φ = 12421333090.

The previous prime is 12421333081. The next prime is 12421333117. The reversal of 12421333091 is 19033312421.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12421333091 - 2⁶ = 12421333027 is a prime.

It is a super-2 number, since 2×12421333091² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12421333051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6210666545 + 6210666546.

It is an arithmetic number, because the mean of its divisors is an integer number (6210666546).

Almost surely, 2^12421333091 is an apocalyptic number.

12421333091 is a deficient number, since it is larger than the sum of its proper divisors (1).

12421333091 is an equidigital number, since it uses as much as digits as its factorization.

12421333091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 29.

The spelling of 12421333091 in words is "twelve billion, four hundred twenty-one million, three hundred thirty-three thousand, ninety-one".