21001132302 has 16 divisors (see below), whose sum is σ = 42005292672. Its totient is φ = 6999872760.

The previous prime is 21001132289. The next prime is 21001132309. The reversal of 21001132302 is 20323110012.

It is a super-2 number, since 2×21001132302² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21001132309) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30418 + ... + 207189.

It is an arithmetic number, because the mean of its divisors is an integer number (2625330792).

Almost surely, 2^21001132302 is an apocalyptic number.

21001132302 is an abundant number, since it is smaller than the sum of its proper divisors (21004160370).

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

21001132302 is a wasteful number, since it uses less digits than its factorization.

21001132302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252343.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 21001132302 its reverse (20323110012), we get a palindrome (41324242314).

The spelling of 21001132302 in words is "twenty-one billion, one million, one hundred thirty-two thousand, three hundred two".