12120121220122 has 16 divisors (see below), whose sum is σ = 19870559269632. Its totient is φ = 5519599796160.

The previous prime is 12120121220087. The next prime is 12120121220143. The reversal of 12120121220122 is 22102212102121.

It is a self number, because there is not a number n which added to its sum of digits gives 12120121220122.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5749582068 + ... + 5749584175.

It is an arithmetic number, because the mean of its divisors is an integer number (1241909954352).

Almost surely, 2^{12120121220122} is an apocalyptic number.

12120121220122 is a deficient number, since it is larger than the sum of its proper divisors (7750438049510).

12120121220122 is a wasteful number, since it uses less digits than its factorization.

12120121220122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11499166293.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 12120121220122 its reverse (22102212102121), we get a palindrome (34222333322243).

The spelling of 12120121220122 in words is "twelve trillion, one hundred twenty billion, one hundred twenty-one million, two hundred twenty thousand, one hundred twenty-two".