11211311504 has 20 divisors (see below), whose sum is σ = 22999676364. Its totient is φ = 5275911168.

The previous prime is 11211311477. The next prime is 11211311509. The reversal of 11211311504 is 40511311211.

It can be written as a sum of positive squares in 2 ways, for example, as 3498959104 + 7712352400 = 59152^2 + 87820^2 .

It is not an unprimeable number, because it can be changed into a prime (11211311509) 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, 20608757 + ... + 20609300.

Almost surely, 2^11211311504 is an apocalyptic number.

It is an amenable number.

11211311504 is an abundant number, since it is smaller than the sum of its proper divisors (11788364860).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11211311504 is a wasteful number, since it uses less digits than its factorization.

11211311504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41218082 (or 41218076 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 20.

Adding to 11211311504 its reverse (40511311211), we get a palindrome (51722622715).

The spelling of 11211311504 in words is "eleven billion, two hundred eleven million, three hundred eleven thousand, five hundred four".