11126321215 has 8 divisors (see below), whose sum is σ = 13359109680. Its totient is φ = 8896040832.

The previous prime is 11126321209. The next prime is 11126321273. The reversal of 11126321215 is 51212362111.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11126321215 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11126321215.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 617245 + ... + 635014.

It is an arithmetic number, because the mean of its divisors is an integer number (1669888710).

Almost surely, 2^11126321215 is an apocalyptic number.

11126321215 is a deficient number, since it is larger than the sum of its proper divisors (2232788465).

11126321215 is a wasteful number, since it uses less digits than its factorization.

11126321215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1254041.

The product of its digits is 720, while the sum is 25.

Adding to 11126321215 its reverse (51212362111), we get a palindrome (62338683326).

The spelling of 11126321215 in words is "eleven billion, one hundred twenty-six million, three hundred twenty-one thousand, two hundred fifteen".