12010011421 has 2 divisors, whose sum is σ = 12010011422. Its totient is φ = 12010011420.

The previous prime is 12010011317. The next prime is 12010011427. The reversal of 12010011421 is 12411001021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8838632196 + 3171379225 = 94014^2 + 56315^2 .

It is an emirp because it is prime and its reverse (12411001021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12010011421 - 2¹¹ = 12010009373 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12010011427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6005005710 + 6005005711.

It is an arithmetic number, because the mean of its divisors is an integer number (6005005711).

Almost surely, 2^12010011421 is an apocalyptic number.

It is an amenable number.

12010011421 is a deficient number, since it is larger than the sum of its proper divisors (1).

12010011421 is an equidigital number, since it uses as much as digits as its factorization.

12010011421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 12010011421 its reverse (12411001021), we get a palindrome (24421012442).

The spelling of 12010011421 in words is "twelve billion, ten million, eleven thousand, four hundred twenty-one".