123244221000 has 128 divisors (see below), whose sum is σ = 389790086400. Its totient is φ = 32414860800.

The previous prime is 123244220989. The next prime is 123244221007. The reversal of 123244221000 is 122442321.

It is not an unprimeable number, because it can be changed into a prime (123244221007) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 62380 + ... + 500379.

It is an arithmetic number, because the mean of its divisors is an integer number (3045235050).

Almost surely, 2^123244221000 is an apocalyptic number.

123244221000 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 123244221000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (194895043200).

123244221000 is an abundant number, since it is smaller than the sum of its proper divisors (266545865400).

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

123244221000 is a wasteful number, since it uses less digits than its factorization.

123244221000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 562856 (or 562842 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 123244221000 its reverse (122442321), we get a palindrome (123366663321).

It can be divided in two parts, 12324 and 4221000, that added together give a palindrome (4233324).

The spelling of 123244221000 in words is "one hundred twenty-three billion, two hundred forty-four million, two hundred twenty-one thousand".