12211131000 has 64 divisors (see below), whose sum is σ = 38098738080. Its totient is φ = 3256300800.

The previous prime is 12211130989. The next prime is 12211131001. The reversal of 12211131000 is 13111221.

It is a super-2 number, since 2×12211131000² (a number of 21 digits) contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12211131001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2032189 + ... + 2038188.

Almost surely, 2^12211131000 is an apocalyptic number.

12211131000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12211131000 is an abundant number, since it is smaller than the sum of its proper divisors (25887607080).

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

12211131000 is a wasteful number, since it uses less digits than its factorization.

12211131000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4070401 (or 4070387 counting only the distinct ones).

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

Adding to 12211131000 its reverse (13111221), we get a palindrome (12224242221).

The spelling of 12211131000 in words is "twelve billion, two hundred eleven million, one hundred thirty-one thousand".