10221535515 has 24 divisors (see below), whose sum is σ = 17373080880. Its totient is φ = 5130807808.

The previous prime is 10221535487. The next prime is 10221535517. The reversal of 10221535515 is 51553512201.

It is not a de Polignac number, because 10221535515 - 2¹⁷ = 10221404443 is a prime.

It is not an unprimeable number, because it can be changed into a prime (10221535517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1174620 + ... + 1183289.

It is an arithmetic number, because the mean of its divisors is an integer number (723878370).

Almost surely, 2^10221535515 is an apocalyptic number.

10221535515 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

10221535515 is a deficient number, since it is larger than the sum of its proper divisors (7151545365).

10221535515 is a wasteful number, since it uses less digits than its factorization.

10221535515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2357951 (or 2357934 counting only the distinct ones).

The product of its (nonzero) digits is 7500, while the sum is 30.

The spelling of 10221535515 in words is "ten billion, two hundred twenty-one million, five hundred thirty-five thousand, five hundred fifteen".