200131121020 has 12 divisors (see below), whose sum is σ = 420275354184. Its totient is φ = 80052448400.

The previous prime is 200131120999. The next prime is 200131121039. The reversal of 200131121020 is 20121131002.

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 3 ways as a sum of consecutive naturals, for example, 5003278006 + ... + 5003278045.

It is an arithmetic number, because the mean of its divisors is an integer number (35022946182).

Almost surely, 2^200131121020 is an apocalyptic number.

200131121020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

200131121020 is an abundant number, since it is smaller than the sum of its proper divisors (220144233164).

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

200131121020 is a wasteful number, since it uses less digits than its factorization.

200131121020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10006556060 (or 10006556058 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 200131121020 its reverse (20121131002), we get a palindrome (220252252022).

The spelling of 200131121020 in words is "two hundred billion, one hundred thirty-one million, one hundred twenty-one thousand, twenty".