123212119950 has 96 divisors (see below), whose sum is σ = 340610699520. Its totient is φ = 32750805600.

The previous prime is 123212119897. The next prime is 123212119951. The reversal of 123212119950 is 59911212321.

It is a super-3 number, since 3×123212119950³ (a number of 34 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123212119951) by changing a digit.

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 in 47 ways as a sum of consecutive naturals, for example, 273117 + ... + 566583.

It is an arithmetic number, because the mean of its divisors is an integer number (3548028120).

Almost surely, 2^123212119950 is an apocalyptic number.

123212119950 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 123212119950, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (170305349760).

123212119950 is an abundant number, since it is smaller than the sum of its proper divisors (217398579570).

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

123212119950 is a wasteful number, since it uses less digits than its factorization.

123212119950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 293799 (or 293788 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 36.

The spelling of 123212119950 in words is "one hundred twenty-three billion, two hundred twelve million, one hundred nineteen thousand, nine hundred fifty".