16000121112 has 16 divisors (see below), whose sum is σ = 40000302840. Its totient is φ = 5333373696.

The previous prime is 16000121089. The next prime is 16000121131. The reversal of 16000121112 is 21112100061.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 16000121091 and 16000121100.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 333335833 + ... + 333335880.

Almost surely, 2^16000121112 is an apocalyptic number.

16000121112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

16000121112 is an abundant number, since it is smaller than the sum of its proper divisors (24000181728).

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

16000121112 is a wasteful number, since it uses less digits than its factorization.

16000121112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 666671722 (or 666671718 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 16000121112 its reverse (21112100061), we get a palindrome (37112221173).

The spelling of 16000121112 in words is "sixteen billion, one hundred twenty-one thousand, one hundred twelve".