12211211012 has 72 divisors (see below), whose sum is σ = 29204501760. Its totient is φ = 4391634240.

The previous prime is 12211211011. The next prime is 12211211017. The reversal of 12211211012 is 21011211221.

It is a super-2 number, since 2×12211211012² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is not an unprimeable number, because it can be changed into a prime (12211211011) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 189812 + ... + 245867.

It is an arithmetic number, because the mean of its divisors is an integer number (405618080).

Almost surely, 2^12211211012 is an apocalyptic number.

It is an amenable number.

12211211012 is an abundant number, since it is smaller than the sum of its proper divisors (16993290748).

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

12211211012 is a wasteful number, since it uses less digits than its factorization.

12211211012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 435721 (or 435712 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 12211211012 its reverse (21011211221), we get a palindrome (33222422233).

The spelling of 12211211012 in words is "twelve billion, two hundred eleven million, two hundred eleven thousand, twelve".