11820572722 has 24 divisors (see below), whose sum is σ = 21014866476. Its totient is φ = 4970373408.

The previous prime is 11820572683. The next prime is 11820572723. The reversal of 11820572722 is 22727502811.

It can be written as a sum of positive squares in 2 ways, for example, as 11782885401 + 37687321 = 108549^2 + 6139^2 .

It is not an unprimeable number, because it can be changed into a prime (11820572723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1132713 + ... + 1143100.

Almost surely, 2^11820572722 is an apocalyptic number.

11820572722 is a deficient number, since it is larger than the sum of its proper divisors (9194293754).

11820572722 is a wasteful number, since it uses less digits than its factorization.

11820572722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2275882 (or 2275875 counting only the distinct ones).

The product of its (nonzero) digits is 31360, while the sum is 37.

The spelling of 11820572722 in words is "eleven billion, eight hundred twenty million, five hundred seventy-two thousand, seven hundred twenty-two".