123221296 has 40 divisors (see below), whose sum is σ = 261282384. Its totient is φ = 55829760.

The previous prime is 123221291. The next prime is 123221297. The reversal of 123221296 is 692122321.

It is not an unprimeable number, because it can be changed into a prime (123221291) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64710 + ... + 66586.

Almost surely, 2^123221296 is an apocalyptic number.

123221296 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123221296, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (130641192).

123221296 is an abundant number, since it is smaller than the sum of its proper divisors (138061088).

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

123221296 is a wasteful number, since it uses less digits than its factorization.

123221296 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2269 (or 2263 counting only the distinct ones).

The product of its digits is 2592, while the sum is 28.

The square root of 123221296 is about 11100.5088171669. The cubic root of 123221296 is about 497.6170558630.

The spelling of 123221296 in words is "one hundred twenty-three million, two hundred twenty-one thousand, two hundred ninety-six".