21110100011212 has 6 divisors (see below), whose sum is σ = 36942675019628. Its totient is φ = 10555050005604.

The previous prime is 21110100011197. The next prime is 21110100011261. The reversal of 21110100011212 is 21211000101112.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 21110100011192 and 21110100011201.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2638762501398 + ... + 2638762501405.

Almost surely, 2^{21110100011212} is an apocalyptic number.

It is an amenable number.

21110100011212 is a deficient number, since it is larger than the sum of its proper divisors (15832575008416).

21110100011212 is a wasteful number, since it uses less digits than its factorization.

21110100011212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5277525002807 (or 5277525002805 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 21110100011212 its reverse (21211000101112), we get a palindrome (42321100112324).

The spelling of 21110100011212 in words is "twenty-one trillion, one hundred ten billion, one hundred million, eleven thousand, two hundred twelve".