102123212100123 has 4 divisors (see below), whose sum is σ = 136164282800168. Its totient is φ = 68082141400080.

The previous prime is 102123212100101. The next prime is 102123212100197. The reversal of 102123212100123 is 321001212321201.

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

It is not a de Polignac number, because 102123212100123 - 2³⁶ = 102054492623387 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 102123212100123.

It is not an unprimeable number, because it can be changed into a prime (102123212100823) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17020535350018 + ... + 17020535350023.

It is an arithmetic number, because the mean of its divisors is an integer number (34041070700042).

Almost surely, 2^{102123212100123} is an apocalyptic number.

102123212100123 is a deficient number, since it is larger than the sum of its proper divisors (34041070700045).

102123212100123 is an equidigital number, since it uses as much as digits as its factorization.

102123212100123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34041070700044.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 102123212100123 its reverse (321001212321201), we get a palindrome (423124424421324).

The spelling of 102123212100123 in words is "one hundred two trillion, one hundred twenty-three billion, two hundred twelve million, one hundred thousand, one hundred twenty-three".