121019328 has 126 divisors (see below), whose sum is σ = 368991896. Its totient is φ = 37914624.

The previous prime is 121019317. The next prime is 121019333. The reversal of 121019328 is 823910121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 166101 + ... + 166827.

Almost surely, 2^121019328 is an apocalyptic number.

121019328 is a gapful number since it is divisible by the number (18) 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 121019328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (184495948).

121019328 is an abundant number, since it is smaller than the sum of its proper divisors (247972568).

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

121019328 is a wasteful number, since it uses less digits than its factorization.

121019328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 779 (or 749 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The square root of 121019328 is about 11000.8785103736. The cubic root of 121019328 is about 494.6350784539.

Adding to 121019328 its reverse (823910121), we get a palindrome (944929449).

The spelling of 121019328 in words is "one hundred twenty-one million, nineteen thousand, three hundred twenty-eight".