10001232021 has 16 divisors (see below), whose sum is σ = 14594646528. Its totient is φ = 6041602800.

The previous prime is 10001231963. The next prime is 10001232041. The reversal of 10001232021 is 12023210001.

It is not a de Polignac number, because 10001232021 - 2⁶ = 10001231957 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10001231988 and 10001232006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10001232041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 483465 + ... + 503726.

It is an arithmetic number, because the mean of its divisors is an integer number (912165408).

Almost surely, 2^10001232021 is an apocalyptic number.

10001232021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

10001232021 is a deficient number, since it is larger than the sum of its proper divisors (4593414507).

10001232021 is a wasteful number, since it uses less digits than its factorization.

10001232021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 987512.

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

Adding to 10001232021 its reverse (12023210001), we get a palindrome (22024442022).

The spelling of 10001232021 in words is "ten billion, one million, two hundred thirty-two thousand, twenty-one".