21110211011012 has 12 divisors (see below), whose sum is σ = 37063204350480. Its totient is φ = 10520724053736.

The previous prime is 21110211010939. The next prime is 21110211011023. The reversal of 21110211011012 is 21011011201112.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 8595361562 + ... + 8595364017.

It is an arithmetic number, because the mean of its divisors is an integer number (3088600362540).

Almost surely, 2^{21110211011012} is an apocalyptic number.

It is an amenable number.

21110211011012 is a deficient number, since it is larger than the sum of its proper divisors (15952993339468).

21110211011012 is a wasteful number, since it uses less digits than its factorization.

21110211011012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17190725890 (or 17190725888 counting only the distinct ones).

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

Adding to 21110211011012 its reverse (21011011201112), we get a palindrome (42121222212124).

The spelling of 21110211011012 in words is "twenty-one trillion, one hundred ten billion, two hundred eleven million, eleven thousand, twelve".