11935213621 has 8 divisors (see below), whose sum is σ = 12488993024. Its totient is φ = 11391982560.

The previous prime is 11935213571. The next prime is 11935213637. The reversal of 11935213621 is 12631253911.

11935213621 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11935213621 - 2¹⁵ = 11935180853 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 (11935213021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2634771 + ... + 2639296.

It is an arithmetic number, because the mean of its divisors is an integer number (1561124128).

Almost surely, 2^11935213621 is an apocalyptic number.

It is an amenable number.

11935213621 is a deficient number, since it is larger than the sum of its proper divisors (553779403).

11935213621 is an equidigital number, since it uses as much as digits as its factorization.

11935213621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5274171.

The product of its digits is 9720, while the sum is 34.

The spelling of 11935213621 in words is "eleven billion, nine hundred thirty-five million, two hundred thirteen thousand, six hundred twenty-one".