20023001121091 has 2 divisors, whose sum is σ = 20023001121092. Its totient is φ = 20023001121090.

The previous prime is 20023001121043. The next prime is 20023001121107. The reversal of 20023001121091 is 19012110032002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20023001121091 - 2³⁹ = 19473245307203 is a prime.

It is a super-2 number, since 2×20023001121091² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20023001121391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10011500560545 + 10011500560546.

It is an arithmetic number, because the mean of its divisors is an integer number (10011500560546).

Almost surely, 2^{20023001121091} is an apocalyptic number.

20023001121091 is a deficient number, since it is larger than the sum of its proper divisors (1).

20023001121091 is an equidigital number, since it uses as much as digits as its factorization.

20023001121091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 22.

Adding to 20023001121091 its reverse (19012110032002), we get a palindrome (39035111153093).

The spelling of 20023001121091 in words is "twenty trillion, twenty-three billion, one million, one hundred twenty-one thousand, ninety-one".