2103001020 has 72 divisors (see below), whose sum is σ = 6382862304. Its totient is φ = 560469888.

The previous prime is 2103001007. The next prime is 2103001039. The reversal of 2103001020 is 201003012.

It is a happy number.

It is a super-2 number, since 2×2103001020² = 8845226580242080800, which 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 = 2103000993 and 2103001011.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 544737 + ... + 548583.

Almost surely, 2^2103001020 is an apocalyptic number.

2103001020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2103001020 is an abundant number, since it is smaller than the sum of its proper divisors (4279861284).

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

2103001020 is a wasteful number, since it uses less digits than its factorization.

2103001020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6899 (or 6894 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 2103001020 is about 45858.4890723626. The cubic root of 2103001020 is about 1281.1888815740.

Adding to 2103001020 its reverse (201003012), we get a palindrome (2304004032).

The spelling of 2103001020 in words is "two billion, one hundred three million, one thousand, twenty".