123221340000 has 360 divisors, whose sum is σ = 477687522312. Its totient is φ = 29871360000.

The previous prime is 123221339971. The next prime is 123221340059. The reversal of 123221340000 is 43122321.

123221340000 is a `hidden beast` number, since 1 + 2 + 322 + 1 + 340 + 0 + 0 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (360).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 1948884 + ... + 2011116.

Almost surely, 2^123221340000 is an apocalyptic number.

123221340000 is a gapful number since it is divisible by the number (10) 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 123221340000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (238843761156).

123221340000 is an abundant number, since it is smaller than the sum of its proper divisors (354466182312).

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

123221340000 is a wasteful number, since it uses less digits than its factorization.

123221340000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62280 (or 62254 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 123221340000 its reverse (43122321), we get a palindrome (123264462321).

The spelling of 123221340000 in words is "one hundred twenty-three billion, two hundred twenty-one million, three hundred forty thousand".