12211211222012 has 96 divisors (see below), whose sum is σ = 24553338969600. Its totient is φ = 5259627591680.

The previous prime is 12211211222003. The next prime is 12211211222033. The reversal of 12211211222012 is 21022211211221.

It is a super-2 number, since 2×12211211222012² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 240007808 + ... + 240058680.

It is an arithmetic number, because the mean of its divisors is an integer number (255763947600).

Almost surely, 2^{12211211222012} is an apocalyptic number.

It is an amenable number.

12211211222012 is an abundant number, since it is smaller than the sum of its proper divisors (12342127747588).

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

12211211222012 is a wasteful number, since it uses less digits than its factorization.

12211211222012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53123 (or 53121 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 12211211222012 its reverse (21022211211221), we get a palindrome (33233422433233).

The spelling of 12211211222012 in words is "twelve trillion, two hundred eleven billion, two hundred eleven million, two hundred twenty-two thousand, twelve".