21110000100212 has 24 divisors (see below), whose sum is σ = 37569862199520. Its totient is φ = 10375765357280.

The previous prime is 21110000100151. The next prime is 21110000100317. The reversal of 21110000100212 is 21200100001112.

It is a junction number, because it is equal to n+sod(n) for n = 21110000100193 and 21110000100202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5924363 + ... + 8793069.

It is an arithmetic number, because the mean of its divisors is an integer number (1565410924980).

Almost surely, 2^{21110000100212} is an apocalyptic number.

It is an amenable number.

21110000100212 is a deficient number, since it is larger than the sum of its proper divisors (16459862099308).

21110000100212 is a wasteful number, since it uses less digits than its factorization.

21110000100212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2899951 (or 2899949 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 21110000100212 its reverse (21200100001112), we get a palindrome (42310100101324).

The spelling of 21110000100212 in words is "twenty-one trillion, one hundred ten billion, one hundred thousand, two hundred twelve".