11135683021 has 4 divisors (see below), whose sum is σ = 11180048544. Its totient is φ = 11091317500.

The previous prime is 11135683003. The next prime is 11135683033. The reversal of 11135683021 is 12038653111.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11135683021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11135683121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22182385 + ... + 22182886.

It is an arithmetic number, because the mean of its divisors is an integer number (2795012136).

Almost surely, 2^11135683021 is an apocalyptic number.

It is an amenable number.

11135683021 is a deficient number, since it is larger than the sum of its proper divisors (44365523).

11135683021 is an equidigital number, since it uses as much as digits as its factorization.

11135683021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44365522.

The product of its (nonzero) digits is 4320, while the sum is 31.

The spelling of 11135683021 in words is "eleven billion, one hundred thirty-five million, six hundred eighty-three thousand, twenty-one".