21102011101112 has 16 divisors (see below), whose sum is σ = 39566329260360. Its totient is φ = 10550989965024.

The previous prime is 21102011101091. The next prime is 21102011101183. The reversal of 21102011101112 is 21110111020112.

It is a super-2 number, since 2×21102011101112² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5465738 + ... + 8489894.

Almost surely, 2^{21102011101112} is an apocalyptic number.

It is an amenable number.

21102011101112 is a deficient number, since it is larger than the sum of its proper divisors (18464318159248).

21102011101112 is a wasteful number, since it uses less digits than its factorization.

21102011101112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3896390 (or 3896386 counting only the distinct ones).

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

Adding to 21102011101112 its reverse (21110111020112), we get a palindrome (42212122121224).

The spelling of 21102011101112 in words is "twenty-one trillion, one hundred two billion, eleven million, one hundred one thousand, one hundred twelve".