121510450112 has 224 divisors, whose sum is σ = 275220866880. Its totient is φ = 52880670720.

The previous prime is 121510450111. The next prime is 121510450133. The reversal of 121510450112 is 211054015121.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121510450111) 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, 218151338 + ... + 218151894.

Almost surely, 2^121510450112 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 121510450112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (137610433440).

121510450112 is an abundant number, since it is smaller than the sum of its proper divisors (153710416768).

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

121510450112 is a wasteful number, since it uses less digits than its factorization.

121510450112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 839 (or 829 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 23.

Adding to 121510450112 its reverse (211054015121), we get a palindrome (332564465233).

The spelling of 121510450112 in words is "one hundred twenty-one billion, five hundred ten million, four hundred fifty thousand, one hundred twelve".