11351802021 has 36 divisors (see below), whose sum is σ = 18235144512. Its totient is φ = 6262994976.

The previous prime is 11351801941. The next prime is 11351802023. The reversal of 11351802021 is 12020815311.

It is not a de Polignac number, because 11351802021 - 2⁹ = 11351801509 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 11351801982 and 11351802000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11351802023) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 77716 + ... + 169538.

It is an arithmetic number, because the mean of its divisors is an integer number (506531792).

Almost surely, 2^11351802021 is an apocalyptic number.

It is an amenable number.

11351802021 is a deficient number, since it is larger than the sum of its proper divisors (6883342491).

11351802021 is an equidigital number, since it uses as much as digits as its factorization.

11351802021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91898 (or 91862 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 24.

The spelling of 11351802021 in words is "eleven billion, three hundred fifty-one million, eight hundred two thousand, twenty-one".