11124324221251 has 4 divisors (see below), whose sum is σ = 11125197483400. Its totient is φ = 11123450959104.

The previous prime is 11124324221233. The next prime is 11124324221281. The reversal of 11124324221251 is 15212242342111.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11124324221251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11124324221281) 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, 436611966 + ... + 436637443.

It is an arithmetic number, because the mean of its divisors is an integer number (2781299370850).

Almost surely, 2^{11124324221251} is an apocalyptic number.

11124324221251 is a deficient number, since it is larger than the sum of its proper divisors (873262149).

11124324221251 is an equidigital number, since it uses as much as digits as its factorization.

11124324221251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 873262148.

The product of its digits is 7680, while the sum is 31.

Adding to 11124324221251 its reverse (15212242342111), we get a palindrome (26336566563362).

The spelling of 11124324221251 in words is "eleven trillion, one hundred twenty-four billion, three hundred twenty-four million, two hundred twenty-one thousand, two hundred fifty-one".