102111132123 has 48 divisors (see below), whose sum is σ = 198033728256. Its totient is φ = 48964374720.

The previous prime is 102111132119. The next prime is 102111132139. The reversal of 102111132123 is 321231111201.

It is not a de Polignac number, because 102111132123 - 2² = 102111132119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 102111132096 and 102111132105.

It is not an unprimeable number, because it can be changed into a prime (102111132103) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5658165 + ... + 5676182.

It is an arithmetic number, because the mean of its divisors is an integer number (4125702672).

Almost surely, 2^102111132123 is an apocalyptic number.

102111132123 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

102111132123 is a deficient number, since it is larger than the sum of its proper divisors (95922596133).

102111132123 is a wasteful number, since it uses less digits than its factorization.

102111132123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11334384 (or 11334381 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 102111132123 its reverse (321231111201), we get a palindrome (423342243324).

The spelling of 102111132123 in words is "one hundred two billion, one hundred eleven million, one hundred thirty-two thousand, one hundred twenty-three".