10101001123 has 2 divisors, whose sum is σ = 10101001124.
Its totient is φ = 10101001122.
The previous prime is 10101001037. The next prime is 10101001171. The reversal of 10101001123 is 32110010101.
Adding to 10101001123 its reverse (32110010101), we get a palindrome (42211011224).
It is a strong prime.
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-10101001123 is a prime.
It is a super-2 number, since 2×101010011232 (a number of 21 digits) contains 22 as substring.
It is not a weakly prime, because it can be changed into another prime (10101001523) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5050500561 + 5050500562.
It is an arithmetic number, because the mean of its divisors is an integer number (5050500562).
Almost surely, 210101001123 is an apocalyptic number.
10101001123 is a deficient number, since it is larger than the sum of its proper divisors (1).
10101001123 is an equidigital number, since it uses as much as digits as its factorization.
10101001123 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 6, while the sum is 10.
The spelling of 10101001123 in words is "ten billion, one hundred one million, one thousand, one hundred twenty-three".