16010115121 has 36 divisors (see below), whose sum is σ = 21778147776. Its totient is φ = 11515664160.

The previous prime is 16010115119. The next prime is 16010115131. The reversal of 16010115121 is 12151101061.

It is not a de Polignac number, because 16010115121 - 2¹ = 16010115119 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16010115131) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 87220 + ... + 199066.

Almost surely, 2^16010115121 is an apocalyptic number.

16010115121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

16010115121 is a deficient number, since it is larger than the sum of its proper divisors (5768032655).

16010115121 is a wasteful number, since it uses less digits than its factorization.

16010115121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111902 (or 111878 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 19.

Adding to 16010115121 its reverse (12151101061), we get a palindrome (28161216182).

It can be divided in two parts, 16010 and 115121, that added together give a palindrome (131131).

The spelling of 16010115121 in words is "sixteen billion, ten million, one hundred fifteen thousand, one hundred twenty-one".