12110202800021 has 2 divisors, whose sum is σ = 12110202800022. Its totient is φ = 12110202800020.

The previous prime is 12110202799963. The next prime is 12110202800053. The reversal of 12110202800021 is 12000820201121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12105563283025 + 4639516996 = 3479305^2 + 68114^2 .

It is a cyclic number.

It is not a de Polignac number, because 12110202800021 - 2⁴² = 7712156288917 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12110202799966 and 12110202800002.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12110202800321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6055101400010 + 6055101400011.

It is an arithmetic number, because the mean of its divisors is an integer number (6055101400011).

Almost surely, 2^{12110202800021} is an apocalyptic number.

It is an amenable number.

12110202800021 is a deficient number, since it is larger than the sum of its proper divisors (1).

12110202800021 is an equidigital number, since it uses as much as digits as its factorization.

12110202800021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 128, while the sum is 20.

The spelling of 12110202800021 in words is "twelve trillion, one hundred ten billion, two hundred two million, eight hundred thousand, twenty-one".