21110102212012 has 12 divisors (see below), whose sum is σ = 40301104223016. Its totient is φ = 9595501005440.

The previous prime is 21110102212009. The next prime is 21110102212039. The reversal of 21110102212012 is 21021220101112.

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, 239887525093 + ... + 239887525180.

It is an arithmetic number, because the mean of its divisors is an integer number (3358425351918).

Almost surely, 2^{21110102212012} is an apocalyptic number.

21110102212012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21110102212012 is a deficient number, since it is larger than the sum of its proper divisors (19191002011004).

21110102212012 is a wasteful number, since it uses less digits than its factorization.

21110102212012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 479775050288 (or 479775050286 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 21110102212012 its reverse (21021220101112), we get a palindrome (42131322313124).

The spelling of 21110102212012 in words is "twenty-one trillion, one hundred ten billion, one hundred two million, two hundred twelve thousand, twelve".