10021232021 has 4 divisors (see below), whose sum is σ = 10053454944. Its totient is φ = 9989009100.

The previous prime is 10021232017. The next prime is 10021232027. The reversal of 10021232021 is 12023212001.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 10021232021 - 2² = 10021232017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10021231987 and 10021232005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10021232027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16110995 + ... + 16111616.

It is an arithmetic number, because the mean of its divisors is an integer number (2513363736).

Almost surely, 2^10021232021 is an apocalyptic number.

It is an amenable number.

10021232021 is a deficient number, since it is larger than the sum of its proper divisors (32222923).

10021232021 is an equidigital number, since it uses as much as digits as its factorization.

10021232021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32222922.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 10021232021 its reverse (12023212001), we get a palindrome (22044444022).

The spelling of 10021232021 in words is "ten billion, twenty-one million, two hundred thirty-two thousand, twenty-one".