20100010123 has 2 divisors, whose sum is σ = 20100010124. Its totient is φ = 20100010122.

The previous prime is 20100010093. The next prime is 20100010127. The reversal of 20100010123 is 32101000102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20100010123 - 2²¹ = 20097912971 is a prime.

It is not a weakly prime, because it can be changed into another prime (20100010127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10050005061 + 10050005062.

It is an arithmetic number, because the mean of its divisors is an integer number (10050005062).

Almost surely, 2^20100010123 is an apocalyptic number.

20100010123 is a deficient number, since it is larger than the sum of its proper divisors (1).

20100010123 is an equidigital number, since it uses as much as digits as its factorization.

20100010123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12, while the sum is 10.

Adding to 20100010123 its reverse (32101000102), we get a palindrome (52201010225).

The spelling of 20100010123 in words is "twenty billion, one hundred million, ten thousand, one hundred twenty-three".