123222400000 has 264 divisors, whose sum is σ = 351933537312. Its totient is φ = 42240000000.

The previous prime is 123222399931. The next prime is 123222400009. The reversal of 123222400000 is 4222321.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123222400009) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22397250 + ... + 22402750.

Almost surely, 2^123222400000 is an apocalyptic number.

123222400000 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 123222400000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (175966768656).

123222400000 is an abundant number, since it is smaller than the sum of its proper divisors (228711137312).

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

123222400000 is an frugal number, since it uses more digits than its factorization.

123222400000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5553 (or 5515 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

Adding to 123222400000 its reverse (4222321), we get a palindrome (123226622321).

The spelling of 123222400000 in words is "one hundred twenty-three billion, two hundred twenty-two million, four hundred thousand".