11213000000 has 98 divisors (see below), whose sum is σ = 27815620518. Its totient is φ = 4484800000.

The previous prime is 11212999991. The next prime is 11213000027. The reversal of 11213000000 is 31211.

It can be written as a sum of positive squares in 7 ways, for example, as 10067312896 + 1145687104 = 100336^2 + 33848^2 .

It is a Harshad number since it is a multiple of its sum of digits (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 994394 + ... + 1005606.

Almost surely, 2^11213000000 is an apocalyptic number.

11213000000 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 11213000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13907810259).

11213000000 is an abundant number, since it is smaller than the sum of its proper divisors (16602620518).

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

11213000000 is an frugal number, since it uses more digits than its factorization.

11213000000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11255 (or 11220 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 8.

Adding to 11213000000 its reverse (31211), we get a palindrome (11213031211).

The spelling of 11213000000 in words is "eleven billion, two hundred thirteen million", and thus it is an aban number.