1230202020 has 24 divisors (see below), whose sum is σ = 3444565824. Its totient is φ = 328053856.

The previous prime is 1230202009. The next prime is 1230202031. The reversal of 1230202020 is 202020321.

It is an interprime number because it is at equal distance from previous prime (1230202009) and next prime (1230202031).

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 = 1230201987 and 1230202005.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10251624 + ... + 10251743.

It is an arithmetic number, because the mean of its divisors is an integer number (143523576).

Almost surely, 2^1230202020 is an apocalyptic number.

1230202020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1230202020 is an abundant number, since it is smaller than the sum of its proper divisors (2214363804).

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

1230202020 is a wasteful number, since it uses less digits than its factorization.

1230202020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20503379 (or 20503377 counting only the distinct ones).

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

The square root of 1230202020 is about 35074.2358434222. The cubic root of 1230202020 is about 1071.4999257114.

Adding to 1230202020 its reverse (202020321), we get a palindrome (1432222341).

The spelling of 1230202020 in words is "one billion, two hundred thirty million, two hundred two thousand, twenty".