121112020210020 has 96 divisors (see below), whose sum is σ = 388163080924416. Its totient is φ = 27639560601600.

The previous prime is 121112020209991. The next prime is 121112020210039. The reversal of 121112020210020 is 20012020211121.

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

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, 224662101 + ... + 225200540.

It is an arithmetic number, because the mean of its divisors is an integer number (4043365426296).

Almost surely, 2^{121112020210020} is an apocalyptic number.

121112020210020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121112020210020 is an abundant number, since it is smaller than the sum of its proper divisors (267051060714396).

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

121112020210020 is a wasteful number, since it uses less digits than its factorization.

121112020210020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 449863301 (or 449863299 counting only the distinct ones).

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

Adding to 121112020210020 its reverse (20012020211121), we get a palindrome (141124040421141).

The spelling of 121112020210020 in words is "one hundred twenty-one trillion, one hundred twelve billion, twenty million, two hundred ten thousand, twenty".