12012002102123 has 4 divisors (see below), whose sum is σ = 12124263804120. Its totient is φ = 11899740400128.

The previous prime is 12012002102083. The next prime is 12012002102137. The reversal of 12012002102123 is 32120120021021.

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

It is not a de Polignac number, because 12012002102123 - 2⁸ = 12012002101867 is a prime.

It is a super-2 number, since 2×12012002102123² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12012002102153) 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, 56130850838 + ... + 56130851051.

It is an arithmetic number, because the mean of its divisors is an integer number (3031065951030).

Almost surely, 2^{12012002102123} is an apocalyptic number.

12012002102123 is a deficient number, since it is larger than the sum of its proper divisors (112261701997).

12012002102123 is a wasteful number, since it uses less digits than its factorization.

12012002102123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112261701996.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 12012002102123 its reverse (32120120021021), we get a palindrome (44132122123144).

The spelling of 12012002102123 in words is "twelve trillion, twelve billion, two million, one hundred two thousand, one hundred twenty-three".