121210201200120 has 64 divisors (see below), whose sum is σ = 363642951964320. Its totient is φ = 32321622687744.

The previous prime is 121210201200103. The next prime is 121210201200131. The reversal of 121210201200120 is 21002102012121.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 121210201200120.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13599009 + ... + 20672528.

Almost surely, 2^{121210201200120} is an apocalyptic number.

121210201200120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121210201200120 is an abundant number, since it is smaller than the sum of its proper divisors (242432750764200).

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

121210201200120 is a wasteful number, since it uses less digits than its factorization.

121210201200120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34301024 (or 34301020 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 121210201200120 its reverse (21002102012121), we get a palindrome (142212303212241).

The spelling of 121210201200120 in words is "one hundred twenty-one trillion, two hundred ten billion, two hundred one million, two hundred thousand, one hundred twenty".