21113030202 has 32 divisors (see below), whose sum is σ = 46084676544. Its totient is φ = 6395126400.

The previous prime is 21113030177. The next prime is 21113030209. The reversal of 21113030202 is 20203031112.

It is not an unprimeable number, because it can be changed into a prime (21113030209) 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, 87702 + ... + 223422.

It is an arithmetic number, because the mean of its divisors is an integer number (1440146142).

Almost surely, 2^21113030202 is an apocalyptic number.

21113030202 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21113030202 is an abundant number, since it is smaller than the sum of its proper divisors (24971646342).

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

21113030202 is a wasteful number, since it uses less digits than its factorization.

21113030202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138094.

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

Adding to 21113030202 its reverse (20203031112), we get a palindrome (41316061314).

The spelling of 21113030202 in words is "twenty-one billion, one hundred thirteen million, thirty thousand, two hundred two".