200001102120 has 48 divisors (see below), whose sum is σ = 650003583060. Its totient is φ = 53333627136.

The previous prime is 200001102107. The next prime is 200001102127. The reversal of 200001102120 is 21201100002.

It can be written as a sum of positive squares in 2 ways, for example, as 190432740996 + 9568361124 = 436386^2 + 97818^2 .

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (200001102127) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 277778949 + ... + 277779668.

Almost surely, 2^200001102120 is an apocalyptic number.

200001102120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

200001102120 is an abundant number, since it is smaller than the sum of its proper divisors (450002480940).

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

200001102120 is a wasteful number, since it uses less digits than its factorization.

200001102120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 555558634 (or 555558627 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 200001102120 its reverse (21201100002), we get a palindrome (221202202122).

The spelling of 200001102120 in words is "two hundred billion, one million, one hundred two thousand, one hundred twenty".