20201132123 has 2 divisors, whose sum is σ = 20201132124. Its totient is φ = 20201132122.

The previous prime is 20201132111. The next prime is 20201132129. The reversal of 20201132123 is 32123110202.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20201132123 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (20201132129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10100566061 + 10100566062.

It is an arithmetic number, because the mean of its divisors is an integer number (10100566062).

Almost surely, 2^20201132123 is an apocalyptic number.

20201132123 is a deficient number, since it is larger than the sum of its proper divisors (1).

20201132123 is an equidigital number, since it uses as much as digits as its factorization.

20201132123 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 20201132123 its reverse (32123110202), we get a palindrome (52324242325).

The spelling of 20201132123 in words is "twenty billion, two hundred one million, one hundred thirty-two thousand, one hundred twenty-three".