21113030200 has 48 divisors (see below), whose sum is σ = 49126074480. Its totient is φ = 8438626560.

The previous prime is 21113030177. The next prime is 21113030209. The reversal of 21113030200 is 203031112.

It is a super-2 number, since 2×21113030200² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21113030209) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 220092 + ... + 301108.

It is an arithmetic number, because the mean of its divisors is an integer number (1023459885).

Almost surely, 2^21113030200 is an apocalyptic number.

21113030200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21113030200 is an abundant number, since it is smaller than the sum of its proper divisors (28013044280).

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

21113030200 is a wasteful number, since it uses less digits than its factorization.

21113030200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82336 (or 82327 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 21113030200 its reverse (203031112), we get a palindrome (21316061312).

The spelling of 21113030200 in words is "twenty-one billion, one hundred thirteen million, thirty thousand, two hundred".