12019162921 has 2 divisors, whose sum is σ = 12019162922. Its totient is φ = 12019162920.

The previous prime is 12019162919. The next prime is 12019162943. The reversal of 12019162921 is 12926191021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6095705625 + 5923457296 = 78075^2 + 76964^2 .

It is a cyclic number.

It is not a de Polignac number, because 12019162921 - 2¹ = 12019162919 is a prime.

Together with 12019162919, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (12019162901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6009581460 + 6009581461.

It is an arithmetic number, because the mean of its divisors is an integer number (6009581461).

Almost surely, 2^12019162921 is an apocalyptic number.

It is an amenable number.

12019162921 is a deficient number, since it is larger than the sum of its proper divisors (1).

12019162921 is an equidigital number, since it uses as much as digits as its factorization.

12019162921 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 34.

The spelling of 12019162921 in words is "twelve billion, nineteen million, one hundred sixty-two thousand, nine hundred twenty-one".