21113002302 has 96 divisors (see below), whose sum is σ = 50187602592. Its totient is φ = 5901831936.

The previous prime is 21113002231. The next prime is 21113002307. The reversal of 21113002302 is 20320031112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21113002307) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6184348 + ... + 6187760.

It is an arithmetic number, because the mean of its divisors is an integer number (522787527).

Almost surely, 2^21113002302 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21113002302, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25093801296).

21113002302 is an abundant number, since it is smaller than the sum of its proper divisors (29074600290).

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

21113002302 is a wasteful number, since it uses less digits than its factorization.

21113002302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3882 (or 3875 counting only the distinct ones).

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

Adding to 21113002302 its reverse (20320031112), we get a palindrome (41433033414).

The spelling of 21113002302 in words is "twenty-one billion, one hundred thirteen million, two thousand, three hundred two".