11213552420 has 48 divisors (see below), whose sum is σ = 26919919488. Its totient is φ = 3843590400.

The previous prime is 11213552369. The next prime is 11213552429. The reversal of 11213552420 is 2425531211.

It is a self number, because there is not a number n which added to its sum of digits gives 11213552420.

It is not an unprimeable number, because it can be changed into a prime (11213552429) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 635720 + ... + 653120.

It is an arithmetic number, because the mean of its divisors is an integer number (560831656).

Almost surely, 2^11213552420 is an apocalyptic number.

11213552420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11213552420 is an abundant number, since it is smaller than the sum of its proper divisors (15706367068).

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

11213552420 is a wasteful number, since it uses less digits than its factorization.

11213552420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22020 (or 22018 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 26.

The spelling of 11213552420 in words is "eleven billion, two hundred thirteen million, five hundred fifty-two thousand, four hundred twenty".