12211001012222 has 4 divisors (see below), whose sum is σ = 18316501518336. Its totient is φ = 6105500506110.

The previous prime is 12211001012191. The next prime is 12211001012251. The reversal of 12211001012222 is 22221010011221.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 12211001012222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3052750253054 + ... + 3052750253057.

It is an arithmetic number, because the mean of its divisors is an integer number (4579125379584).

Almost surely, 2^{12211001012222} is an apocalyptic number.

12211001012222 is a deficient number, since it is larger than the sum of its proper divisors (6105500506114).

12211001012222 is an equidigital number, since it uses as much as digits as its factorization.

12211001012222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6105500506113.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 12211001012222 its reverse (22221010011221), we get a palindrome (34432011023443).

It can be divided in two parts, 1221100 and 1012222, that added together give a palindrome (2233322).

The spelling of 12211001012222 in words is "twelve trillion, two hundred eleven billion, one million, twelve thousand, two hundred twenty-two".