11211313020 has 48 divisors (see below), whose sum is σ = 32240106528. Its totient is φ = 2908880640.

The previous prime is 11211312989. The next prime is 11211313021. The reversal of 11211313020 is 2031311211.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11211313021) 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, 2522851 + ... + 2527290.

It is an arithmetic number, because the mean of its divisors is an integer number (671668886).

Almost surely, 2^11211313020 is an apocalyptic number.

11211313020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11211313020 is an abundant number, since it is smaller than the sum of its proper divisors (21028793508).

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

11211313020 is a wasteful number, since it uses less digits than its factorization.

11211313020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5050190 (or 5050188 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 11211313020 its reverse (2031311211), we get a palindrome (13242624231).

The spelling of 11211313020 in words is "eleven billion, two hundred eleven million, three hundred thirteen thousand, twenty".