11120203021 has 2 divisors, whose sum is σ = 11120203022. Its totient is φ = 11120203020.

The previous prime is 11120203019. The next prime is 11120203043. The reversal of 11120203021 is 12030202111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10482892996 + 637310025 = 102386^2 + 25245^2 .

It is a cyclic number.

It is not a de Polignac number, because 11120203021 - 2¹ = 11120203019 is a prime.

Together with 11120203019, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 11120202992 and 11120203010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11120203621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5560101510 + 5560101511.

It is an arithmetic number, because the mean of its divisors is an integer number (5560101511).

Almost surely, 2^11120203021 is an apocalyptic number.

It is an amenable number.

11120203021 is a deficient number, since it is larger than the sum of its proper divisors (1).

11120203021 is an equidigital number, since it uses as much as digits as its factorization.

11120203021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 11120203021 its reverse (12030202111), we get a palindrome (23150405132).

The spelling of 11120203021 in words is "eleven billion, one hundred twenty million, two hundred three thousand, twenty-one".