101212010123 has 6 divisors (see below), whose sum is σ = 117736419996. Its totient is φ = 86753151492.

The previous prime is 101212010087. The next prime is 101212010131. The reversal of 101212010123 is 321010212101.

It is not a de Polignac number, because 101212010123 - 2¹⁰ = 101212009099 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 101212010098 and 101212010107.

It is not an unprimeable number, because it can be changed into a prime (101212010173) 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 in 5 ways as a sum of consecutive naturals, for example, 1032775565 + ... + 1032775662.

It is an arithmetic number, because the mean of its divisors is an integer number (19622736666).

Almost surely, 2^101212010123 is an apocalyptic number.

101212010123 is a deficient number, since it is larger than the sum of its proper divisors (16524409873).

101212010123 is an equidigital number, since it uses as much as digits as its factorization.

101212010123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2065551241 (or 2065551234 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 101212010123 its reverse (321010212101), we get a palindrome (422222222224).

The spelling of 101212010123 in words is "one hundred one billion, two hundred twelve million, ten thousand, one hundred twenty-three".