1010200020 has 48 divisors (see below), whose sum is σ = 2951544960. Its totient is φ = 257673856.

The previous prime is 1010199991. The next prime is 1010200049. The reversal of 1010200020 is 200020101.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1010199991) and next prime (1010200049).

It is a Harshad number since it is a multiple of its sum of digits (6).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is a junction number, because it is equal to n+sod(n) for n = 1010199981 and 1010200008.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 364635 + ... + 367394.

It is an arithmetic number, because the mean of its divisors is an integer number (61490520).

Almost surely, 2^1010200020 is an apocalyptic number.

1010200020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1010200020 is an abundant number, since it is smaller than the sum of its proper divisors (1941344940).

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

1010200020 is a wasteful number, since it uses less digits than its factorization.

1010200020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 732064 (or 732062 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 6.

The square root of 1010200020 is about 31783.6439068902. The cubic root of 1010200020 is about 1003.3885116862.

Adding to 1010200020 its reverse (200020101), we get a palindrome (1210220121).

The spelling of 1010200020 in words is "one billion, ten million, two hundred thousand, twenty".