10202002123 has 2 divisors, whose sum is σ = 10202002124. Its totient is φ = 10202002122.

The previous prime is 10202002121. The next prime is 10202002147. The reversal of 10202002123 is 32120020201.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 10202002123 - 2¹ = 10202002121 is a prime.

Together with 10202002121, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (10202002121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5101001061 + 5101001062.

It is an arithmetic number, because the mean of its divisors is an integer number (5101001062).

Almost surely, 2^10202002123 is an apocalyptic number.

10202002123 is a deficient number, since it is larger than the sum of its proper divisors (1).

10202002123 is an equidigital number, since it uses as much as digits as its factorization.

10202002123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 13.

Adding to 10202002123 its reverse (32120020201), we get a palindrome (42322022324).

The spelling of 10202002123 in words is "ten billion, two hundred two million, two thousand, one hundred twenty-three".