11540122305421 has 4 divisors (see below), whose sum is σ = 11547215191072. Its totient is φ = 11533029419772.

The previous prime is 11540122305407. The next prime is 11540122305457. The reversal of 11540122305421 is 12450322104511.

11540122305421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 11540122305421 - 2⁵ = 11540122305389 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 (11540122305461) 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, 3546440385 + ... + 3546443638.

It is an arithmetic number, because the mean of its divisors is an integer number (2886803797768).

Almost surely, 2^{11540122305421} is an apocalyptic number.

It is an amenable number.

11540122305421 is a deficient number, since it is larger than the sum of its proper divisors (7092885651).

11540122305421 is an equidigital number, since it uses as much as digits as its factorization.

11540122305421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7092885650.

The product of its (nonzero) digits is 9600, while the sum is 31.

Adding to 11540122305421 its reverse (12450322104511), we get a palindrome (23990444409932).

The spelling of 11540122305421 in words is "eleven trillion, five hundred forty billion, one hundred twenty-two million, three hundred five thousand, four hundred twenty-one".