11213110020 has 72 divisors (see below), whose sum is σ = 36522710784. Its totient is φ = 2562995904.

The previous prime is 11213110009. The next prime is 11213110033. The reversal of 11213110020 is 2001131211.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 11213109978 and 11213110005.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1904052 + ... + 1909931.

It is an arithmetic number, because the mean of its divisors is an integer number (507259872).

Almost surely, 2^11213110020 is an apocalyptic number.

11213110020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11213110020 is an abundant number, since it is smaller than the sum of its proper divisors (25309600764).

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

11213110020 is a wasteful number, since it uses less digits than its factorization.

11213110020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3814009 (or 3814000 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 12.

Adding to 11213110020 its reverse (2001131211), we get a palindrome (13214241231).

The spelling of 11213110020 in words is "eleven billion, two hundred thirteen million, one hundred ten thousand, twenty".