112221421000 has 128 divisors (see below), whose sum is σ = 284019372000. Its totient is φ = 41256652800.

The previous prime is 112221420973. The next prime is 112221421007. The reversal of 112221421000 is 124122211.

It can be written as a sum of positive squares in 16 ways, for example, as 53693231524 + 58528189476 = 231718^2 + 241926^2 .

It is not an unprimeable number, because it can be changed into a prime (112221421007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3010476 + ... + 3047524.

Almost surely, 2^112221421000 is an apocalyptic number.

112221421000 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 112221421000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (142009686000).

112221421000 is an abundant number, since it is smaller than the sum of its proper divisors (171797951000).

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

112221421000 is a wasteful number, since it uses less digits than its factorization.

112221421000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37316 (or 37302 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 112221421000 its reverse (124122211), we get a palindrome (112345543211).

The spelling of 112221421000 in words is "one hundred twelve billion, two hundred twenty-one million, four hundred twenty-one thousand".