16121141512 has 48 divisors (see below), whose sum is σ = 35273377260. Its totient is φ = 6887212416.

The previous prime is 16121141503. The next prime is 16121141537. The reversal of 16121141512 is 21514112161.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 15486806916 + 634334596 = 124446^2 + 25186^2 .

It is a super-2 number, since 2×16121141512² (a number of 21 digits) contains 22 as substring.

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 11 ways as a sum of consecutive naturals, for example, 59398 + ... + 189130.

Almost surely, 2^16121141512 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 16121141512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17636688630).

16121141512 is an abundant number, since it is smaller than the sum of its proper divisors (19152235748).

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

16121141512 is a wasteful number, since it uses less digits than its factorization.

16121141512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130070 (or 130059 counting only the distinct ones).

The product of its digits is 480, while the sum is 25.

Adding to 16121141512 its reverse (21514112161), we get a palindrome (37635253673).

The spelling of 16121141512 in words is "sixteen billion, one hundred twenty-one million, one hundred forty-one thousand, five hundred twelve".