11215310420 has 12 divisors (see below), whose sum is σ = 23552151924. Its totient is φ = 4486124160.

The previous prime is 11215310419. The next prime is 11215310423. The reversal of 11215310420 is 2401351211.

It can be written as a sum of positive squares in 2 ways, for example, as 7497481744 + 3717828676 = 86588^2 + 60974^2 .

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 560765521 = 11215310420 / (1 + 1 + 2 + 1 + 5 + 3 + 1 + 0 + 4 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 11215310392 and 11215310401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11215310423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 280382741 + ... + 280382780.

It is an arithmetic number, because the mean of its divisors is an integer number (1962679327).

Almost surely, 2^11215310420 is an apocalyptic number.

11215310420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11215310420 is an abundant number, since it is smaller than the sum of its proper divisors (12336841504).

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

11215310420 is a wasteful number, since it uses less digits than its factorization.

11215310420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 560765530 (or 560765528 counting only the distinct ones).

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

Adding to 11215310420 its reverse (2401351211), we get a palindrome (13616661631).

The spelling of 11215310420 in words is "eleven billion, two hundred fifteen million, three hundred ten thousand, four hundred twenty".