20221000231 has 2 divisors, whose sum is σ = 20221000232. Its totient is φ = 20221000230.

The previous prime is 20221000171. The next prime is 20221000253. The reversal of 20221000231 is 13200012202.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20221000231 - 2¹¹ = 20220998183 is a prime.

It is a super-2 number, since 2×20221000231² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20221090231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10110500115 + 10110500116.

It is an arithmetic number, because the mean of its divisors is an integer number (10110500116).

Almost surely, 2^20221000231 is an apocalyptic number.

20221000231 is a deficient number, since it is larger than the sum of its proper divisors (1).

20221000231 is an equidigital number, since it uses as much as digits as its factorization.

20221000231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 13.

Adding to 20221000231 its reverse (13200012202), we get a palindrome (33421012433).

The spelling of 20221000231 in words is "twenty billion, two hundred twenty-one million, two hundred thirty-one", and thus it is an aban number.