11215420000 has 60 divisors (see below), whose sum is σ = 27591664716. Its totient is φ = 4486160000.

The previous prime is 11215419977. The next prime is 11215420001. The reversal of 11215420000 is 2451211.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11215420001) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 260386 + ... + 300385.

Almost surely, 2^11215420000 is an apocalyptic number.

11215420000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11215420000 is an abundant number, since it is smaller than the sum of its proper divisors (16376244716).

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

11215420000 is an frugal number, since it uses more digits than its factorization.

11215420000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 560801 (or 560778 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 16.

Adding to 11215420000 its reverse (2451211), we get a palindrome (11217871211).

The spelling of 11215420000 in words is "eleven billion, two hundred fifteen million, four hundred twenty thousand".