12021001200122 has 24 divisors (see below), whose sum is σ = 18796811062068. Its totient is φ = 5765138924160.

The previous prime is 12021001200113. The next prime is 12021001200151. The reversal of 12021001200122 is 22100210012021.

It can be written as a sum of positive squares in 2 ways, for example, as 12020581319041 + 419881081 = 3467071^2 + 20491^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12021001200097 and 12021001200106.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27457253 + ... + 27891624.

Almost surely, 2^{12021001200122} is an apocalyptic number.

12021001200122 is a deficient number, since it is larger than the sum of its proper divisors (6775809861946).

12021001200122 is a wasteful number, since it uses less digits than its factorization.

12021001200122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55349054 (or 55349023 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 12021001200122 its reverse (22100210012021), we get a palindrome (34121211212143).

The spelling of 12021001200122 in words is "twelve trillion, twenty-one billion, one million, two hundred thousand, one hundred twenty-two".