121443130112 has 72 divisors (see below), whose sum is σ = 256823539056. Its totient is φ = 57115836416.

The previous prime is 121443130111. The next prime is 121443130213. The reversal of 121443130112 is 211031344121.

It is a super-2 number, since 2×121443130112² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (121443130111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8291948 + ... + 8306580.

It is an arithmetic number, because the mean of its divisors is an integer number (3566993598).

Almost surely, 2^121443130112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121443130112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (128411769528).

121443130112 is an abundant number, since it is smaller than the sum of its proper divisors (135380408944).

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

121443130112 is a wasteful number, since it uses less digits than its factorization.

121443130112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16573 (or 16559 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 121443130112 its reverse (211031344121), we get a palindrome (332474474233).

The spelling of 121443130112 in words is "one hundred twenty-one billion, four hundred forty-three million, one hundred thirty thousand, one hundred twelve".