21232124022021 has 32 divisors (see below), whose sum is σ = 31401970100736. Its totient is φ = 12652463736000.

The previous prime is 21232124022017. The next prime is 21232124022071. The reversal of 21232124022021 is 12022042123212.

It is not a de Polignac number, because 21232124022021 - 2² = 21232124022017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21232124021982 and 21232124022000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21232124022071) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7679035 + ... + 10071336.

It is an arithmetic number, because the mean of its divisors is an integer number (981311565648).

Almost surely, 2^{21232124022021} is an apocalyptic number.

It is an amenable number.

21232124022021 is a deficient number, since it is larger than the sum of its proper divisors (10169846078715).

21232124022021 is a wasteful number, since it uses less digits than its factorization.

21232124022021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17750993.

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 21232124022021 its reverse (12022042123212), we get a palindrome (33254166145233).

The spelling of 21232124022021 in words is "twenty-one trillion, two hundred thirty-two billion, one hundred twenty-four million, twenty-two thousand, twenty-one".