11421212320 has 48 divisors (see below), whose sum is σ = 30837276288. Its totient is φ = 3915843840.

The previous prime is 11421212317. The next prime is 11421212339. The reversal of 11421212320 is 2321212411.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5097636 + ... + 5099875.

It is an arithmetic number, because the mean of its divisors is an integer number (642443256).

Almost surely, 2^11421212320 is an apocalyptic number.

11421212320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11421212320 is an abundant number, since it is smaller than the sum of its proper divisors (19416063968).

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

11421212320 is a wasteful number, since it uses less digits than its factorization.

11421212320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10197533 (or 10197525 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 11421212320 its reverse (2321212411), we get a palindrome (13742424731).

Subtracting from 11421212320 its reverse (2321212411), we obtain a palindrome (9099999909).

The spelling of 11421212320 in words is "eleven billion, four hundred twenty-one million, two hundred twelve thousand, three hundred twenty".