11221552342 has 144 divisors (see below), whose sum is σ = 24113134080. Its totient is φ = 3821463360.

The previous prime is 11221552337. The next prime is 11221552403. The reversal of 11221552342 is 24325512211.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 11221552342.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 5438403 + ... + 5440465.

It is an arithmetic number, because the mean of its divisors is an integer number (167452320).

Almost surely, 2^11221552342 is an apocalyptic number.

11221552342 is an abundant number, since it is smaller than the sum of its proper divisors (12891581738).

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

11221552342 is a wasteful number, since it uses less digits than its factorization.

11221552342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2139 (or 2115 counting only the distinct ones).

The product of its digits is 4800, while the sum is 28.

The spelling of 11221552342 in words is "eleven billion, two hundred twenty-one million, five hundred fifty-two thousand, three hundred forty-two".