20232021000091 has 2 divisors, whose sum is σ = 20232021000092. Its totient is φ = 20232021000090.

The previous prime is 20232021000047. The next prime is 20232021000101. The reversal of 20232021000091 is 19000012023202.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20232021000091 - 2¹³ = 20232020991899 is a prime.

It is not a weakly prime, because it can be changed into another prime (20232021000491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10116010500045 + 10116010500046.

It is an arithmetic number, because the mean of its divisors is an integer number (10116010500046).

Almost surely, 2^{20232021000091} is an apocalyptic number.

20232021000091 is a deficient number, since it is larger than the sum of its proper divisors (1).

20232021000091 is an equidigital number, since it uses as much as digits as its factorization.

20232021000091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 20232021000091 its reverse (19000012023202), we get a palindrome (39232033023293).

The spelling of 20232021000091 in words is "twenty trillion, two hundred thirty-two billion, twenty-one million, ninety-one", and thus it is an aban number.