200100121121020 has 24 divisors (see below), whose sum is σ = 444928504611024. Its totient is φ = 75331810304256.

The previous prime is 200100121121011. The next prime is 200100121121053. The reversal of 200100121121020 is 20121121001002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 294264883662 + ... + 294264884341.

It is an arithmetic number, because the mean of its divisors is an integer number (18538687692126).

Almost surely, 2^{200100121121020} is an apocalyptic number.

200100121121020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

200100121121020 is an abundant number, since it is smaller than the sum of its proper divisors (244828383490004).

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

200100121121020 is a wasteful number, since it uses less digits than its factorization.

200100121121020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 588529768029 (or 588529768027 counting only the distinct ones).

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

Adding to 200100121121020 its reverse (20121121001002), we get a palindrome (220221242122022).

The spelling of 200100121121020 in words is "two hundred trillion, one hundred billion, one hundred twenty-one million, one hundred twenty-one thousand, twenty".