200102002020 has 48 divisors (see below), whose sum is σ = 622539563520. Its totient is φ = 53360533728.

The previous prime is 200102002019. The next prime is 200102002031. The reversal of 200102002020 is 20200201002.

It is a super-2 number, since 2×200102002020² (a number of 23 digits) contains 22 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 200102001993 and 200102002011.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 185279092 + ... + 185280171.

It is an arithmetic number, because the mean of its divisors is an integer number (12969574240).

Almost surely, 2^200102002020 is an apocalyptic number.

200102002020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

200102002020 is an abundant number, since it is smaller than the sum of its proper divisors (422437561500).

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

200102002020 is a wasteful number, since it uses less digits than its factorization.

200102002020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370559281 (or 370559273 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

Adding to 200102002020 its reverse (20200201002), we get a palindrome (220302203022).

The spelling of 200102002020 in words is "two hundred billion, one hundred two million, two thousand, twenty".