101011001123 has 2 divisors, whose sum is σ = 101011001124. Its totient is φ = 101011001122.

The previous prime is 101011001089. The next prime is 101011001129. The reversal of 101011001123 is 321100110101.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 101011001123 - 2¹² = 101010997027 is a prime.

It is a super-2 number, since 2×101011001123² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (101011001129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50505500561 + 50505500562.

It is an arithmetic number, because the mean of its divisors is an integer number (50505500562).

Almost surely, 2^101011001123 is an apocalyptic number.

101011001123 is a deficient number, since it is larger than the sum of its proper divisors (1).

101011001123 is an equidigital number, since it uses as much as digits as its factorization.

101011001123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6, while the sum is 11.

Adding to 101011001123 its reverse (321100110101), we get a palindrome (422111111224).

The spelling of 101011001123 in words is "one hundred one billion, eleven million, one thousand, one hundred twenty-three".