11420203312 has 80 divisors (see below), whose sum is σ = 25755494400. Its totient is φ = 4804070400.

The previous prime is 11420203283. The next prime is 11420203337. The reversal of 11420203312 is 21330202411.

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 11420203312.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7935489 + ... + 7936927.

It is an arithmetic number, because the mean of its divisors is an integer number (321943680).

Almost surely, 2^11420203312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11420203312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12877747200).

11420203312 is an abundant number, since it is smaller than the sum of its proper divisors (14335291088).

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

11420203312 is a wasteful number, since it uses less digits than its factorization.

11420203312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2714 (or 2708 counting only the distinct ones).

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

Adding to 11420203312 its reverse (21330202411), we get a palindrome (32750405723).

Subtracting 11420203312 from its reverse (21330202411), we obtain a palindrome (9909999099).

The spelling of 11420203312 in words is "eleven billion, four hundred twenty million, two hundred three thousand, three hundred twelve".