12101202111123 has 24 divisors (see below), whose sum is σ = 18009345856320. Its totient is φ = 7825205139840.

The previous prime is 12101202111079. The next prime is 12101202111143. The reversal of 12101202111123 is 32111120210121.

It is a happy number.

12101202111123 is a `hidden beast` number, since 1 + 210 + 120 + 211 + 1 + 123 = 666.

It is not a de Polignac number, because 12101202111123 - 2¹³ = 12101202102931 is a prime.

It is a super-2 number, since 2×12101202111123² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12101202111096 and 12101202111105.

It is not an unprimeable number, because it can be changed into a prime (12101202111143) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 94718203 + ... + 94845876.

It is an arithmetic number, because the mean of its divisors is an integer number (750389410680).

Almost surely, 2^{12101202111123} is an apocalyptic number.

12101202111123 is a deficient number, since it is larger than the sum of its proper divisors (5908143745197).

12101202111123 is a wasteful number, since it uses less digits than its factorization.

12101202111123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189564299 (or 189564296 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 18.

Adding to 12101202111123 its reverse (32111120210121), we get a palindrome (44212322321244).

The spelling of 12101202111123 in words is "twelve trillion, one hundred one billion, two hundred two million, one hundred eleven thousand, one hundred twenty-three".