11240620021 has 2 divisors, whose sum is σ = 11240620022. Its totient is φ = 11240620020.

The previous prime is 11240619979. The next prime is 11240620051. The reversal of 11240620021 is 12002604211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10944298225 + 296321796 = 104615^2 + 17214^2 .

It is a cyclic number.

It is not a de Polignac number, because 11240620021 - 2⁷ = 11240619893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11240620051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5620310010 + 5620310011.

It is an arithmetic number, because the mean of its divisors is an integer number (5620310011).

Almost surely, 2^11240620021 is an apocalyptic number.

It is an amenable number.

11240620021 is a deficient number, since it is larger than the sum of its proper divisors (1).

11240620021 is an equidigital number, since it uses as much as digits as its factorization.

11240620021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 19.

The spelling of 11240620021 in words is "eleven billion, two hundred forty million, six hundred twenty thousand, twenty-one".