201020102123 has 2 divisors, whose sum is σ = 201020102124. Its totient is φ = 201020102122.

The previous prime is 201020102093. The next prime is 201020102167. The reversal of 201020102123 is 321201020102.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 201020102123 - 2²² = 201015907819 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 201020102098 and 201020102107.

It is not a weakly prime, because it can be changed into another prime (201020101123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100510051061 + 100510051062.

It is an arithmetic number, because the mean of its divisors is an integer number (100510051062).

Almost surely, 2^201020102123 is an apocalyptic number.

201020102123 is a deficient number, since it is larger than the sum of its proper divisors (1).

201020102123 is an equidigital number, since it uses as much as digits as its factorization.

201020102123 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 14.

Adding to 201020102123 its reverse (321201020102), we get a palindrome (522221122225).

The spelling of 201020102123 in words is "two hundred one billion, twenty million, one hundred two thousand, one hundred twenty-three".