5115121000 has 64 divisors (see below), whose sum is σ = 13057536960. Its totient is φ = 1860040000.

The previous prime is 5115120991. The next prime is 5115121003. The reversal of 5115121000 is 1215115.

It is not an unprimeable number, because it can be changed into a prime (5115121003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 221506 + ... + 243505.

It is an arithmetic number, because the mean of its divisors is an integer number (204024015).

Almost surely, 2^5115121000 is an apocalyptic number.

5115121000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

5115121000 is an abundant number, since it is smaller than the sum of its proper divisors (7942415960).

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

5115121000 is a wasteful number, since it uses less digits than its factorization.

5115121000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 465043 (or 465029 counting only the distinct ones).

The product of its (nonzero) digits is 50, while the sum is 16.

The square root of 5115121000 is about 71520.0741051070. The cubic root of 5115121000 is about 1723.0001047586. Note that the first 3 decimals are identical.

Adding to 5115121000 its reverse (1215115), we get a palindrome (5116336115).

The spelling of 5115121000 in words is "five billion, one hundred fifteen million, one hundred twenty-one thousand".