5215021100 has 18 divisors (see below), whose sum is σ = 11316596004. Its totient is φ = 2086008400.

The previous prime is 5215021087. The next prime is 5215021103. The reversal of 5215021100 is 11205125.

It is not an unprimeable number, because it can be changed into a prime (5215021103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 26075006 + ... + 26075205.

It is an arithmetic number, because the mean of its divisors is an integer number (628699778).

Almost surely, 2^5215021100 is an apocalyptic number.

5215021100 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

5215021100 is an abundant number, since it is smaller than the sum of its proper divisors (6101574904).

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

5215021100 is a wasteful number, since it uses less digits than its factorization.

5215021100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52150225 (or 52150218 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 17.

The square root of 5215021100 is about 72215.1029909949. The cubic root of 5215021100 is about 1734.1447946928.

Adding to 5215021100 its reverse (11205125), we get a palindrome (5226226225).

The spelling of 5215021100 in words is "five billion, two hundred fifteen million, twenty-one thousand, one hundred".