21113002306 has 16 divisors (see below), whose sum is σ = 36050660928. Its totient is φ = 9179566000.

The previous prime is 21113002231. The next prime is 21113002307. The reversal of 21113002306 is 60320031112.

It is a super-2 number, since 2×21113002306² (a number of 21 digits) contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 20862145 + ... + 20863156.

It is an arithmetic number, because the mean of its divisors is an integer number (2253166308).

Almost surely, 2^21113002306 is an apocalyptic number.

21113002306 is a deficient number, since it is larger than the sum of its proper divisors (14937658622).

21113002306 is a wasteful number, since it uses less digits than its factorization.

21113002306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41725337.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 21113002306 its reverse (60320031112), we get a palindrome (81433033418).

The spelling of 21113002306 in words is "twenty-one billion, one hundred thirteen million, two thousand, three hundred six".