123211430250 has 32 divisors (see below), whose sum is σ = 307535731776. Its totient is φ = 32856381200.

The previous prime is 123211430233. The next prime is 123211430297. The reversal of 123211430250 is 52034112321.

It is a self number, because there is not a number n which added to its sum of digits gives 123211430250.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 82140204 + ... + 82141703.

It is an arithmetic number, because the mean of its divisors is an integer number (9610491618).

Almost surely, 2^123211430250 is an apocalyptic number.

123211430250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

123211430250 is an abundant number, since it is smaller than the sum of its proper divisors (184324301526).

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

123211430250 is a wasteful number, since it uses less digits than its factorization.

123211430250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164281927 (or 164281917 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

Adding to 123211430250 its reverse (52034112321), we get a palindrome (175245542571).

The spelling of 123211430250 in words is "one hundred twenty-three billion, two hundred eleven million, four hundred thirty thousand, two hundred fifty".