11215210340 has 24 divisors (see below), whose sum is σ = 23638860672. Its totient is φ = 4469528160.

The previous prime is 11215210319. The next prime is 11215210367. The reversal of 11215210340 is 4301251211.

11215210340 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

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, 1029194 + ... + 1040033.

It is an arithmetic number, because the mean of its divisors is an integer number (984952528).

Almost surely, 2^11215210340 is an apocalyptic number.

11215210340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11215210340 is an abundant number, since it is smaller than the sum of its proper divisors (12423650332).

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

11215210340 is a wasteful number, since it uses less digits than its factorization.

11215210340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2069507 (or 2069505 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 20.

Adding to 11215210340 its reverse (4301251211), we get a palindrome (15516461551).

The spelling of 11215210340 in words is "eleven billion, two hundred fifteen million, two hundred ten thousand, three hundred forty".