21240102332 has 24 divisors (see below), whose sum is σ = 37453079664. Its totient is φ = 10539389952.

The previous prime is 21240102329. The next prime is 21240102347. The reversal of 21240102332 is 23320104212.

It is a super-2 number, since 2×21240102332² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 498908 + ... + 539804.

It is an arithmetic number, because the mean of its divisors is an integer number (1560544986).

Almost surely, 2^21240102332 is an apocalyptic number.

It is an amenable number.

21240102332 is a deficient number, since it is larger than the sum of its proper divisors (16212977332).

21240102332 is a wasteful number, since it uses less digits than its factorization.

21240102332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41885 (or 41883 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 21240102332 its reverse (23320104212), we get a palindrome (44560206544).

The spelling of 21240102332 in words is "twenty-one billion, two hundred forty million, one hundred two thousand, three hundred thirty-two".