101012311030123 has 4 divisors (see below), whose sum is σ = 104270772676288. Its totient is φ = 97753849383960.

The previous prime is 101012311030067. The next prime is 101012311030151. The reversal of 101012311030123 is 321030113210101.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101012311030123 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 101012311030123.

It is not an unprimeable number, because it can be changed into a prime (101012311030153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1629230823036 + ... + 1629230823097.

It is an arithmetic number, because the mean of its divisors is an integer number (26067693169072).

Almost surely, 2^{101012311030123} is an apocalyptic number.

101012311030123 is a deficient number, since it is larger than the sum of its proper divisors (3258461646165).

101012311030123 is an equidigital number, since it uses as much as digits as its factorization.

101012311030123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3258461646164.

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 101012311030123 its reverse (321030113210101), we get a palindrome (422042424240224).

The spelling of 101012311030123 in words is "one hundred one trillion, twelve billion, three hundred eleven million, thirty thousand, one hundred twenty-three".