121000210021120 has 72 divisors (see below), whose sum is σ = 289844152284960. Its totient is φ = 48398274355200.

The previous prime is 121000210021109. The next prime is 121000210021151. The reversal of 121000210021120 is 21120012000121.

It is a self number, because there is not a number n which added to its sum of digits gives 121000210021120.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32743516 + ... + 36251044.

It is an arithmetic number, because the mean of its divisors is an integer number (4025613226180).

Almost surely, 2^{121000210021120} is an apocalyptic number.

121000210021120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121000210021120 is an abundant number, since it is smaller than the sum of its proper divisors (168843942263840).

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

121000210021120 is an equidigital number, since it uses as much as digits as its factorization.

121000210021120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3534501 (or 3534487 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 121000210021120 its reverse (21120012000121), we get a palindrome (142120222021241).

The spelling of 121000210021120 in words is "one hundred twenty-one trillion, two hundred ten million, twenty-one thousand, one hundred twenty".