200012120020 has 48 divisors (see below), whose sum is σ = 425523602448. Its totient is φ = 78962585600.

The previous prime is 200012119981. The next prime is 200012120027. The reversal of 200012120020 is 20021210002.

It can be written as a sum of positive squares in 8 ways, for example, as 1563253444 + 198448866576 = 39538^2 + 445476^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 200012119979 and 200012120006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200012120027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 484164 + ... + 796516.

It is an arithmetic number, because the mean of its divisors is an integer number (8865075051).

Almost surely, 2^200012120020 is an apocalyptic number.

200012120020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

200012120020 is an abundant number, since it is smaller than the sum of its proper divisors (225511482428).

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

200012120020 is a wasteful number, since it uses less digits than its factorization.

200012120020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312780 (or 312778 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 200012120020 its reverse (20021210002), we get a palindrome (220033330022).

The spelling of 200012120020 in words is "two hundred billion, twelve million, one hundred twenty thousand, twenty".