12010210999921 has 2 divisors, whose sum is σ = 12010210999922. Its totient is φ = 12010210999920.

The previous prime is 12010210999903. The next prime is 12010210999957. The reversal of 12010210999921 is 12999901201021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9883604192400 + 2126606807521 = 3143820^2 + 1458289^2 .

It is a cyclic number.

It is not a de Polignac number, because 12010210999921 - 2⁵ = 12010210999889 is a prime.

It is not a weakly prime, because it can be changed into another prime (12010210999991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6005105499960 + 6005105499961.

It is an arithmetic number, because the mean of its divisors is an integer number (6005105499961).

Almost surely, 2^{12010210999921} is an apocalyptic number.

It is an amenable number.

12010210999921 is a deficient number, since it is larger than the sum of its proper divisors (1).

12010210999921 is an equidigital number, since it uses as much as digits as its factorization.

12010210999921 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 52488, while the sum is 46.

The spelling of 12010210999921 in words is "twelve trillion, ten billion, two hundred ten million, nine hundred ninety-nine thousand, nine hundred twenty-one".