121020000200120 has 128 divisors (see below), whose sum is σ = 311468622796800. Its totient is φ = 41456001540096.

The previous prime is 121020000200119. The next prime is 121020000200159. The reversal of 121020000200120 is 21002000020121.

It is a happy number.

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 31 ways as a sum of consecutive naturals, for example, 3876469871 + ... + 3876501089.

It is an arithmetic number, because the mean of its divisors is an integer number (2433348615600).

Almost surely, 2^{121020000200120} is an apocalyptic number.

121020000200120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121020000200120 is an abundant number, since it is smaller than the sum of its proper divisors (190448622596680).

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

121020000200120 is a wasteful number, since it uses less digits than its factorization.

121020000200120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42997 (or 42993 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 121020000200120 its reverse (21002000020121), we get a palindrome (142022000220241).

The spelling of 121020000200120 in words is "one hundred twenty-one trillion, twenty billion, two hundred thousand, one hundred twenty".