123111322002 has 24 divisors (see below), whose sum is σ = 278338641984. Its totient is φ = 39252885144.

The previous prime is 123111321923. The next prime is 123111322027. The reversal of 123111322002 is 200223111321.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 148684758 + ... + 148685585.

It is an arithmetic number, because the mean of its divisors is an integer number (11597443416).

Almost surely, 2^123111322002 is an apocalyptic number.

123111322002 is an abundant number, since it is smaller than the sum of its proper divisors (155227319982).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123111322002 is a wasteful number, since it uses less digits than its factorization.

123111322002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297370374 (or 297370371 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 123111322002 its reverse (200223111321), we get a palindrome (323334433323).

The spelling of 123111322002 in words is "one hundred twenty-three billion, one hundred eleven million, three hundred twenty-two thousand, two".