123111115162 has 32 divisors (see below), whose sum is σ = 215531424000. Its totient is φ = 52718614704.

The previous prime is 123111115121. The next prime is 123111115187. The reversal of 123111115162 is 261511111321.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 770083 + ... + 916105.

It is an arithmetic number, because the mean of its divisors is an integer number (6735357000).

Almost surely, 2^123111115162 is an apocalyptic number.

123111115162 is a deficient number, since it is larger than the sum of its proper divisors (92420308838).

123111115162 is a wasteful number, since it uses less digits than its factorization.

123111115162 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147275 (or 147261 counting only the distinct ones).

The product of its digits is 360, while the sum is 25.

Adding to 123111115162 its reverse (261511111321), we get a palindrome (384622226483).

The spelling of 123111115162 in words is "one hundred twenty-three billion, one hundred eleven million, one hundred fifteen thousand, one hundred sixty-two".