11213501100 has 72 divisors (see below), whose sum is σ = 32570863248. Its totient is φ = 2978611200.

The previous prime is 11213501093. The next prime is 11213501207. The reversal of 11213501100 is 110531211.

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

It is a self number, because there is not a number n which added to its sum of digits gives 11213501100.

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, 4380 + ... + 149820.

Almost surely, 2^11213501100 is an apocalyptic number.

11213501100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11213501100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16285431624).

11213501100 is an abundant number, since it is smaller than the sum of its proper divisors (21357362148).

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

11213501100 is a wasteful number, since it uses less digits than its factorization.

11213501100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145715 (or 145708 counting only the distinct ones).

The product of its (nonzero) digits is 30, while the sum is 15.

The spelling of 11213501100 in words is "eleven billion, two hundred thirteen million, five hundred one thousand, one hundred".