20231132021 has 2 divisors, whose sum is σ = 20231132022. Its totient is φ = 20231132020.

The previous prime is 20231132011. The next prime is 20231132023. The reversal of 20231132021 is 12023113202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19213840996 + 1017291025 = 138614^2 + 31895^2 .

It is a cyclic number.

It is not a de Polignac number, because 20231132021 - 2⁶ = 20231131957 is a prime.

It is a super-2 number, since 2×20231132021² (a number of 21 digits) contains 22 as substring.

Together with 20231132023, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20231132023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10115566010 + 10115566011.

It is an arithmetic number, because the mean of its divisors is an integer number (10115566011).

Almost surely, 2^20231132021 is an apocalyptic number.

It is an amenable number.

20231132021 is a deficient number, since it is larger than the sum of its proper divisors (1).

20231132021 is an equidigital number, since it uses as much as digits as its factorization.

20231132021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 20231132021 its reverse (12023113202), we get a palindrome (32254245223).

The spelling of 20231132021 in words is "twenty billion, two hundred thirty-one million, one hundred thirty-two thousand, twenty-one".