21113000200100 has 18 divisors (see below), whose sum is σ = 45815210434434. Its totient is φ = 8445200080000.

The previous prime is 21113000200091. The next prime is 21113000200109. The reversal of 21113000200100 is 100200031112.

It is an interprime number because it is at equal distance from previous prime (21113000200091) and next prime (21113000200109).

It can be written as a sum of positive squares in 3 ways, for example, as 2950129148836 + 18162871051264 = 1717594^2 + 4261792^2 .

It is not an unprimeable number, because it can be changed into a prime (21113000200109) 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 5 ways as a sum of consecutive naturals, for example, 105565000901 + ... + 105565001100.

Almost surely, 2^{21113000200100} is an apocalyptic number.

21113000200100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21113000200100 is an abundant number, since it is smaller than the sum of its proper divisors (24702210234334).

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

21113000200100 is a wasteful number, since it uses less digits than its factorization.

21113000200100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211130002015 (or 211130002008 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 11.

Adding to 21113000200100 its reverse (100200031112), we get a palindrome (21213200231212).

The spelling of 21113000200100 in words is "twenty-one trillion, one hundred thirteen billion, two hundred thousand, one hundred".