21302114240 has 112 divisors (see below), whose sum is σ = 57743262720. Its totient is φ = 7409402880.

The previous prime is 21302114221. The next prime is 21302114243. The reversal of 21302114240 is 4241120312.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21302114243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50600 + ... + 212519.

Almost surely, 2^21302114240 is an apocalyptic number.

21302114240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21302114240 is an abundant number, since it is smaller than the sum of its proper divisors (36441148480).

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

21302114240 is a wasteful number, since it uses less digits than its factorization.

21302114240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263170 (or 263160 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 21302114240 its reverse (4241120312), we get a palindrome (25543234552).

The spelling of 21302114240 in words is "twenty-one billion, three hundred two million, one hundred fourteen thousand, two hundred forty".