12120221211222 has 64 divisors (see below), whose sum is σ = 25591109322240. Its totient is φ = 3816222854400.

The previous prime is 12120221211151. The next prime is 12120221211227. The reversal of 12120221211222 is 22211212202121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12120221211227) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 69336543 + ... + 69511125.

It is an arithmetic number, because the mean of its divisors is an integer number (399861083160).

Almost surely, 2^{12120221211222} is an apocalyptic number.

12120221211222 is an abundant number, since it is smaller than the sum of its proper divisors (13470888111018).

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

12120221211222 is a wasteful number, since it uses less digits than its factorization.

12120221211222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176389.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 12120221211222 its reverse (22211212202121), we get a palindrome (34331433413343).

The spelling of 12120221211222 in words is "twelve trillion, one hundred twenty billion, two hundred twenty-one million, two hundred eleven thousand, two hundred twenty-two".