11135706421 has 4 divisors (see below), whose sum is σ = 12726521632. Its totient is φ = 9544891212.

The previous prime is 11135706383. The next prime is 11135706467. The reversal of 11135706421 is 12460753111.

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 not a de Polignac number, because 11135706421 - 2¹⁷ = 11135575349 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 (11135706521) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 795407595 + ... + 795407608.

It is an arithmetic number, because the mean of its divisors is an integer number (3181630408).

Almost surely, 2^11135706421 is an apocalyptic number.

It is an amenable number.

11135706421 is a deficient number, since it is larger than the sum of its proper divisors (1590815211).

11135706421 is an equidigital number, since it uses as much as digits as its factorization.

11135706421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1590815210.

The product of its (nonzero) digits is 5040, while the sum is 31.

The spelling of 11135706421 in words is "eleven billion, one hundred thirty-five million, seven hundred six thousand, four hundred twenty-one".