200120002120 has 32 divisors (see below), whose sum is σ = 450745560000. Its totient is φ = 79963457728.

The previous prime is 200120002079. The next prime is 200120002133. The reversal of 200120002120 is 21200021002.

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 = 200120002097 and 200120002106.

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, 2603620 + ... + 2679379.

It is an arithmetic number, because the mean of its divisors is an integer number (14085798750).

Almost surely, 2^200120002120 is an apocalyptic number.

200120002120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

200120002120 is an abundant number, since it is smaller than the sum of its proper divisors (250625557880).

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

200120002120 is a wasteful number, since it uses less digits than its factorization.

200120002120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5283957 (or 5283953 counting only the distinct ones).

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

Adding to 200120002120 its reverse (21200021002), we get a palindrome (221320023122).

The spelling of 200120002120 in words is "two hundred billion, one hundred twenty million, two thousand, one hundred twenty".