21110011101212 has 48 divisors (see below), whose sum is σ = 40441804990944. Its totient is φ = 9561936384000.

The previous prime is 21110011101211. The next prime is 21110011101227. The reversal of 21110011101212 is 21210111001112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21110011101211) 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 15 ways as a sum of consecutive naturals, for example, 46059662 + ... + 46515722.

It is an arithmetic number, because the mean of its divisors is an integer number (842537603978).

Almost surely, 2^{21110011101212} is an apocalyptic number.

21110011101212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21110011101212 is a deficient number, since it is larger than the sum of its proper divisors (19331793889732).

21110011101212 is a wasteful number, since it uses less digits than its factorization.

21110011101212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 459750 (or 459748 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 21110011101212 its reverse (21210111001112), we get a palindrome (42320122102324).

The spelling of 21110011101212 in words is "twenty-one trillion, one hundred ten billion, eleven million, one hundred one thousand, two hundred twelve".