20423195101 has 2 divisors, whose sum is σ = 20423195102. Its totient is φ = 20423195100.

The previous prime is 20423195083. The next prime is 20423195113. The reversal of 20423195101 is 10159132402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19529783001 + 893412100 = 139749^2 + 29890^2 .

It is a cyclic number.

It is not a de Polignac number, because 20423195101 - 2¹⁷ = 20423064029 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20423195101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20423195141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10211597550 + 10211597551.

It is an arithmetic number, because the mean of its divisors is an integer number (10211597551).

Almost surely, 2^20423195101 is an apocalyptic number.

It is an amenable number.

20423195101 is a deficient number, since it is larger than the sum of its proper divisors (1).

20423195101 is an equidigital number, since it uses as much as digits as its factorization.

20423195101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 28.

The spelling of 20423195101 in words is "twenty billion, four hundred twenty-three million, one hundred ninety-five thousand, one hundred one".