21112010013100 has 36 divisors (see below), whose sum is σ = 45815084053200. Its totient is φ = 8444431226560.

The previous prime is 21112010013089. The next prime is 21112010013121. The reversal of 21112010013100 is 131001021112.

It is a happy number.

It is a super-2 number, since 2×21112010013100² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2377480 + ... + 6919279.

It is an arithmetic number, because the mean of its divisors is an integer number (1272641223700).

Almost surely, 2^{21112010013100} is an apocalyptic number.

21112010013100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21112010013100 is an abundant number, since it is smaller than the sum of its proper divisors (24703074040100).

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

21112010013100 is a wasteful number, since it uses less digits than its factorization.

21112010013100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9319482 (or 9319475 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 21112010013100 its reverse (131001021112), we get a palindrome (21243011034212).

The spelling of 21112010013100 in words is "twenty-one trillion, one hundred twelve billion, ten million, thirteen thousand, one hundred".