121819016 has 32 divisors (see below), whose sum is σ = 253886400. Its totient is φ = 54325440.

The previous prime is 121818953. The next prime is 121819021. The reversal of 121819016 is 610918121.

It is a super-3 number, since 3×121819016³ (a number of 25 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 121819016.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8396 + ... + 17723.

It is an arithmetic number, because the mean of its divisors is an integer number (7933950).

Almost surely, 2^121819016 is an apocalyptic number.

It is an amenable number.

121819016 is an abundant number, since it is smaller than the sum of its proper divisors (132067384).

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

121819016 is a wasteful number, since it uses less digits than its factorization.

121819016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26189 (or 26185 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 29.

The square root of 121819016 is about 11037.1652157608. The cubic root of 121819016 is about 495.7221931129.

The spelling of 121819016 in words is "one hundred twenty-one million, eight hundred nineteen thousand, sixteen".