103421243112 has 128 divisors (see below), whose sum is σ = 298775433600. Its totient is φ = 29483827200.

The previous prime is 103421243111. The next prime is 103421243141. The reversal of 103421243112 is 211342124301.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (103421243111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18528162 + ... + 18533742.

It is an arithmetic number, because the mean of its divisors is an integer number (2334183075).

Almost surely, 2^103421243112 is an apocalyptic number.

103421243112 is a gapful number since it is divisible by the number (12) 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 103421243112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (149387716800).

103421243112 is an abundant number, since it is smaller than the sum of its proper divisors (195354190488).

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

103421243112 is a wasteful number, since it uses less digits than its factorization.

103421243112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9747 (or 9743 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 103421243112 its reverse (211342124301), we get a palindrome (314763367413).

The spelling of 103421243112 in words is "one hundred three billion, four hundred twenty-one million, two hundred forty-three thousand, one hundred twelve".