11151430421 has 4 divisors (see below), whose sum is σ = 11151768192. Its totient is φ = 11151092652.

The previous prime is 11151430417. The next prime is 11151430427. The reversal of 11151430421 is 12403415111.

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 11151430421 - 2² = 11151430417 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 (11151430427) 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, 113255 + ... + 187428.

It is an arithmetic number, because the mean of its divisors is an integer number (2787942048).

Almost surely, 2^11151430421 is an apocalyptic number.

It is an amenable number.

11151430421 is a deficient number, since it is larger than the sum of its proper divisors (337771).

11151430421 is an equidigital number, since it uses as much as digits as its factorization.

11151430421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 337770.

The product of its (nonzero) digits is 480, while the sum is 23.

Adding to 11151430421 its reverse (12403415111), we get a palindrome (23554845532).

The spelling of 11151430421 in words is "eleven billion, one hundred fifty-one million, four hundred thirty thousand, four hundred twenty-one".