21275002302684 has 96 divisors (see below), whose sum is σ = 54845519817984. Its totient is φ = 6378691991040.

The previous prime is 21275002302683. The next prime is 21275002302721. The reversal of 21275002302684 is 48620320057212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21275002302683) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10308982 + ... + 12199389.

It is an arithmetic number, because the mean of its divisors is an integer number (571307498104).

Almost surely, 2^{21275002302684} is an apocalyptic number.

It is an amenable number.

21275002302684 is an abundant number, since it is smaller than the sum of its proper divisors (33570517515300).

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

21275002302684 is a wasteful number, since it uses less digits than its factorization.

21275002302684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22508547 (or 22508545 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 42.

Adding to 21275002302684 its reverse (48620320057212), we get a palindrome (69895322359896).

The spelling of 21275002302684 in words is "twenty-one trillion, two hundred seventy-five billion, two million, three hundred two thousand, six hundred eighty-four".