11200100120021 has 2 divisors, whose sum is σ = 11200100120022. Its totient is φ = 11200100120020.

The previous prime is 11200100119973. The next prime is 11200100120023. The reversal of 11200100120021 is 12002100100211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10349822488996 + 850277631025 = 3217114^2 + 922105^2 .

It is a cyclic number.

It is not a de Polignac number, because 11200100120021 - 2³⁴ = 11182920250837 is a prime.

Together with 11200100120023, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 11200100119984 and 11200100120011.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11200100120023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5600050060010 + 5600050060011.

It is an arithmetic number, because the mean of its divisors is an integer number (5600050060011).

Almost surely, 2^{11200100120021} is an apocalyptic number.

It is an amenable number.

11200100120021 is a deficient number, since it is larger than the sum of its proper divisors (1).

11200100120021 is an equidigital number, since it uses as much as digits as its factorization.

11200100120021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 11200100120021 its reverse (12002100100211), we get a palindrome (23202200220232).

The spelling of 11200100120021 in words is "eleven trillion, two hundred billion, one hundred million, one hundred twenty thousand, twenty-one".