21113230002 has 32 divisors (see below), whose sum is σ = 44812310400. Its totient is φ = 6608656128.

The previous prime is 21113229971. The next prime is 21113230003. The reversal of 21113230002 is 20003231112.

21113230002 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×21113230002² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21113230003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 190977 + ... + 280532.

It is an arithmetic number, because the mean of its divisors is an integer number (1400384700).

Almost surely, 2^21113230002 is an apocalyptic number.

21113230002 is an abundant number, since it is smaller than the sum of its proper divisors (23699080398).

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

21113230002 is a wasteful number, since it uses less digits than its factorization.

21113230002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 471970.

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

Adding to 21113230002 its reverse (20003231112), we get a palindrome (41116461114).

The spelling of 21113230002 in words is "twenty-one billion, one hundred thirteen million, two hundred thirty thousand, two".