200102120 has 16 divisors (see below), whose sum is σ = 450229860. Its totient is φ = 80040832.

The previous prime is 200102113. The next prime is 200102153. The reversal of 200102120 is 21201002.

It can be written as a sum of positive squares in 2 ways, for example, as 193822084 + 6280036 = 13922^2 + 2506^2 .

It is a Harshad number since it is a multiple of its sum of digits (8).

It is a junction number, because it is equal to n+sod(n) for n = 200102098 and 200102107.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2501237 + ... + 2501316.

Almost surely, 2^200102120 is an apocalyptic number.

200102120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

200102120 is an abundant number, since it is smaller than the sum of its proper divisors (250127740).

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

200102120 is a wasteful number, since it uses less digits than its factorization.

200102120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5002564 (or 5002560 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 8.

The square root of 200102120 is about 14145.7456501946. The cubic root of 200102120 is about 584.9030642706.

Adding to 200102120 its reverse (21201002), we get a palindrome (221303122).

The spelling of 200102120 in words is "two hundred million, one hundred two thousand, one hundred twenty".