1232010021 has 12 divisors (see below), whose sum is σ = 1805590976. Its totient is φ = 746672520.

The previous prime is 1232010011. The next prime is 1232010041. The reversal of 1232010021 is 1200102321.

It is not a de Polignac number, because 1232010021 - 2¹⁰ = 1232008997 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1232009979 and 1232010006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1232010011) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1696621 + ... + 1697346.

Almost surely, 2^1232010021 is an apocalyptic number.

1232010021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1232010021 is a deficient number, since it is larger than the sum of its proper divisors (573580955).

1232010021 is a wasteful number, since it uses less digits than its factorization.

1232010021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3393992 (or 3393981 counting only the distinct ones).

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

The square root of 1232010021 is about 35100.0002991453. Note that the first 3 decimals coincide. The cubic root of 1232010021 is about 1072.0245887678.

Adding to 1232010021 its reverse (1200102321), we get a palindrome (2432112342).

The spelling of 1232010021 in words is "one billion, two hundred thirty-two million, ten thousand, twenty-one".