1201201200120 has 64 divisors (see below), whose sum is σ = 3604330897920. Its totient is φ = 320255671424.

The previous prime is 1201201200103. The next prime is 1201201200163. The reversal of 1201201200120 is 210021021021.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 1201201200096 and 1201201200105.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 411612 + ... + 1603691.

It is an arithmetic number, because the mean of its divisors is an integer number (56317670280).

Almost surely, 2^{1201201200120} is an apocalyptic number.

1201201200120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1201201200120 is an abundant number, since it is smaller than the sum of its proper divisors (2403129697800).

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

1201201200120 is a wasteful number, since it uses less digits than its factorization.

1201201200120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2020284 (or 2020280 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 1201201200120 its reverse (210021021021), we get a palindrome (1411222221141).

The spelling of 1201201200120 in words is "one trillion, two hundred one billion, two hundred one million, two hundred thousand, one hundred twenty".