12211011012 has 12 divisors (see below), whose sum is σ = 28492359056. Its totient is φ = 4070337000.

The previous prime is 12211010993. The next prime is 12211011053. The reversal of 12211011012 is 21011011221.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Harshad number since it is a multiple of its sum of digits (12), and also a Moran number because the ratio is a prime number: 1017584251 = 12211011012 / (1 + 2 + 2 + 1 + 1 + 0 + 1 + 1 + 0 + 1 + 2).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 508792114 + ... + 508792137.

Almost surely, 2^12211011012 is an apocalyptic number.

12211011012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12211011012 is an abundant number, since it is smaller than the sum of its proper divisors (16281348044).

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

12211011012 is a wasteful number, since it uses less digits than its factorization.

12211011012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1017584258 (or 1017584256 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 12211011012 its reverse (21011011221), we get a palindrome (33222022233).

The spelling of 12211011012 in words is "twelve billion, two hundred eleven million, eleven thousand, twelve".