12211000000 has 98 divisors (see below), whose sum is σ = 30291096644. Its totient is φ = 4884000000.

The previous prime is 12210999979. The next prime is 12211000003. The reversal of 12211000000 is 11221.

It is not an unprimeable number, because it can be changed into a prime (12211000003) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 993895 + ... + 1006105.

Almost surely, 2^12211000000 is an apocalyptic number.

12211000000 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 12211000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15145548322).

12211000000 is an abundant number, since it is smaller than the sum of its proper divisors (18080096644).

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

12211000000 is an frugal number, since it uses more digits than its factorization.

12211000000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12253 (or 12218 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 7.

Adding to 12211000000 its reverse (11221), we get a palindrome (12211011221).

The spelling of 12211000000 in words is "twelve billion, two hundred eleven million", and thus it is an aban number.