11331220402 has 16 divisors (see below), whose sum is σ = 17592696000. Its totient is φ = 5467205520.

The previous prime is 11331220393. The next prime is 11331220403. The reversal of 11331220402 is 20402213311.

It is a happy number.

11331220402 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 11331220402.

It is not an unprimeable number, because it can be changed into a prime (11331220403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52849 + ... + 159547.

It is an arithmetic number, because the mean of its divisors is an integer number (1099543500).

Almost surely, 2^11331220402 is an apocalyptic number.

11331220402 is a deficient number, since it is larger than the sum of its proper divisors (6261475598).

11331220402 is a wasteful number, since it uses less digits than its factorization.

11331220402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108561.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 11331220402 its reverse (20402213311), we get a palindrome (31733433713).

The spelling of 11331220402 in words is "eleven billion, three hundred thirty-one million, two hundred twenty thousand, four hundred two".