1203202020 has 24 divisors (see below), whose sum is σ = 3368965824. Its totient is φ = 320853856.

The previous prime is 1203201973. The next prime is 1203202051. The reversal of 1203202020 is 202023021.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 1203201987 and 1203202005.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10026624 + ... + 10026743.

It is an arithmetic number, because the mean of its divisors is an integer number (140373576).

Almost surely, 2^1203202020 is an apocalyptic number.

1203202020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1203202020 is an abundant number, since it is smaller than the sum of its proper divisors (2165763804).

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

1203202020 is a wasteful number, since it uses less digits than its factorization.

1203202020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20053379 (or 20053377 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 1203202020 is about 34687.2025392651. The cubic root of 1203202020 is about 1063.6029113992.

Adding to 1203202020 its reverse (202023021), we get a palindrome (1405225041).

The spelling of 1203202020 in words is "one billion, two hundred three million, two hundred two thousand, twenty".