11820212522 has 4 divisors (see below), whose sum is σ = 17730318786. Its totient is φ = 5910106260.

The previous prime is 11820212513. The next prime is 11820212527. The reversal of 11820212522 is 22521202811.

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

It can be written as a sum of positive squares in only one way, i.e., 8941782721 + 2878429801 = 94561^2 + 53651^2 .

It is a junction number, because it is equal to n+sod(n) for n = 11820212491 and 11820212500.

It is not an unprimeable number, because it can be changed into a prime (11820212527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2955053129 + ... + 2955053132.

Almost surely, 2^11820212522 is an apocalyptic number.

11820212522 is a deficient number, since it is larger than the sum of its proper divisors (5910106264).

11820212522 is an equidigital number, since it uses as much as digits as its factorization.

11820212522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5910106263.

The product of its (nonzero) digits is 1280, while the sum is 26.

The spelling of 11820212522 in words is "eleven billion, eight hundred twenty million, two hundred twelve thousand, five hundred twenty-two".