12120021011222 has 16 divisors (see below), whose sum is σ = 18187446009312. Its totient is φ = 6057539379840.

The previous prime is 12120021011221. The next prime is 12120021011237. The reversal of 12120021011222 is 22211012002121.

It is a self number, because there is not a number n which added to its sum of digits gives 12120021011222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12120021011221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70514447 + ... + 70686117.

It is an arithmetic number, because the mean of its divisors is an integer number (1136715375582).

Almost surely, 2^{12120021011222} is an apocalyptic number.

12120021011222 is a deficient number, since it is larger than the sum of its proper divisors (6067424998090).

12120021011222 is a wasteful number, since it uses less digits than its factorization.

12120021011222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185863.

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

Adding to 12120021011222 its reverse (22211012002121), we get a palindrome (34331033013343).

The spelling of 12120021011222 in words is "twelve trillion, one hundred twenty billion, twenty-one million, eleven thousand, two hundred twenty-two".