1201221200120 has 16 divisors (see below), whose sum is σ = 2702747700360. Its totient is φ = 480488480032.

The previous prime is 1201221200093. The next prime is 1201221200167. The reversal of 1201221200120 is 210021221021.

It is a junction number, because it is equal to n+sod(n) for n = 1201221200095 and 1201221200104.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15015264962 + ... + 15015265041.

Almost surely, 2^{1201221200120} is an apocalyptic number.

1201221200120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1201221200120 is an abundant number, since it is smaller than the sum of its proper divisors (1501526500240).

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

1201221200120 is a wasteful number, since it uses less digits than its factorization.

1201221200120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30030530014 (or 30030530010 counting only the distinct ones).

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

Adding to 1201221200120 its reverse (210021221021), we get a palindrome (1411242421141).

The spelling of 1201221200120 in words is "one trillion, two hundred one billion, two hundred twenty-one million, two hundred thousand, one hundred twenty".