11102001202021 has 2 divisors, whose sum is σ = 11102001202022. Its totient is φ = 11102001202020.

The previous prime is 11102001202013. The next prime is 11102001202037. The reversal of 11102001202021 is 12020210020111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8068269820900 + 3033731381121 = 2840470^2 + 1741761^2 .

It is a cyclic number.

It is not a de Polignac number, because 11102001202021 - 2³ = 11102001202013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11102001201992 and 11102001202010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11102007202021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5551000601010 + 5551000601011.

It is an arithmetic number, because the mean of its divisors is an integer number (5551000601011).

Almost surely, 2^{11102001202021} is an apocalyptic number.

It is an amenable number.

11102001202021 is a deficient number, since it is larger than the sum of its proper divisors (1).

11102001202021 is an equidigital number, since it uses as much as digits as its factorization.

11102001202021 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 11102001202021 its reverse (12020210020111), we get a palindrome (23122211222132).

The spelling of 11102001202021 in words is "eleven trillion, one hundred two billion, one million, two hundred two thousand, twenty-one".