123102011012 has 6 divisors (see below), whose sum is σ = 215428519278. Its totient is φ = 61551005504.

The previous prime is 123102010987. The next prime is 123102011063. The reversal of 123102011012 is 210110201321.

It can be written as a sum of positive squares in only one way, i.e., 63754230016 + 59347780996 = 252496^2 + 243614^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15387751373 + ... + 15387751380.

It is an arithmetic number, because the mean of its divisors is an integer number (35904753213).

Almost surely, 2^123102011012 is an apocalyptic number.

It is an amenable number.

123102011012 is a deficient number, since it is larger than the sum of its proper divisors (92326508266).

123102011012 is a wasteful number, since it uses less digits than its factorization.

123102011012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30775502757 (or 30775502755 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 123102011012 its reverse (210110201321), we get a palindrome (333212212333).

The spelling of 123102011012 in words is "one hundred twenty-three billion, one hundred two million, eleven thousand, twelve".