11205239420 has 24 divisors (see below), whose sum is σ = 23535873648. Its totient is φ = 4481168000.

The previous prime is 11205239363. The next prime is 11205239471. The reversal of 11205239420 is 2493250211.

It is a congruent number.

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, 45560 + ... + 156480.

It is an arithmetic number, because the mean of its divisors is an integer number (980661402).

Almost surely, 2^11205239420 is an apocalyptic number.

11205239420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11205239420 is an abundant number, since it is smaller than the sum of its proper divisors (12330634228).

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

11205239420 is a wasteful number, since it uses less digits than its factorization.

11205239420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115981 (or 115979 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 29.

Adding to 11205239420 its reverse (2493250211), we get a palindrome (13698489631).

The spelling of 11205239420 in words is "eleven billion, two hundred five million, two hundred thirty-nine thousand, four hundred twenty".