1230211020 has 24 divisors (see below), whose sum is σ = 3444591024. Its totient is φ = 328056256.

The previous prime is 1230211019. The next prime is 1230211033. The reversal of 1230211020 is 201120321.

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 = 1230210987 and 1230211005.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10251699 + ... + 10251818.

It is an arithmetic number, because the mean of its divisors is an integer number (143524626).

Almost surely, 2^1230211020 is an apocalyptic number.

1230211020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1230211020 is an abundant number, since it is smaller than the sum of its proper divisors (2214380004).

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

1230211020 is a wasteful number, since it uses less digits than its factorization.

1230211020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20503529 (or 20503527 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 1230211020 is about 35074.3641424902. The cubic root of 1230211020 is about 1071.5025386903.

Adding to 1230211020 its reverse (201120321), we get a palindrome (1431331341).

The spelling of 1230211020 in words is "one billion, two hundred thirty million, two hundred eleven thousand, twenty".