11612021522 has 4 divisors (see below), whose sum is σ = 17418032286. Its totient is φ = 5806010760.

The previous prime is 11612021471. The next prime is 11612021527. The reversal of 11612021522 is 22512021611.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 22512021611 = 22157 ⋅1016023.

It can be written as a sum of positive squares in only one way, i.e., 11530679161 + 81342361 = 107381^2 + 9019^2 .

It is not an unprimeable number, because it can be changed into a prime (11612021527) 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 as a sum of consecutive naturals, namely, 2903005379 + ... + 2903005382.

Almost surely, 2^11612021522 is an apocalyptic number.

11612021522 is a deficient number, since it is larger than the sum of its proper divisors (5806010764).

11612021522 is an equidigital number, since it uses as much as digits as its factorization.

11612021522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5806010763.

The product of its (nonzero) digits is 480, while the sum is 23.

The spelling of 11612021522 in words is "eleven billion, six hundred twelve million, twenty-one thousand, five hundred twenty-two".