21110121002212 has 48 divisors (see below), whose sum is σ = 40320786744000. Its totient is φ = 9590832898560.

The previous prime is 21110121002207. The next prime is 21110121002233. The reversal of 21110121002212 is 21220012101112.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1654002943 + ... + 1654015705.

It is an arithmetic number, because the mean of its divisors is an integer number (840016390500).

Almost surely, 2^{21110121002212} is an apocalyptic number.

21110121002212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21110121002212 is a deficient number, since it is larger than the sum of its proper divisors (19210665741788).

21110121002212 is a wasteful number, since it uses less digits than its factorization.

21110121002212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28156 (or 28154 counting only the distinct ones).

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

Adding to 21110121002212 its reverse (21220012101112), we get a palindrome (42330133103324).

The spelling of 21110121002212 in words is "twenty-one trillion, one hundred ten billion, one hundred twenty-one million, two thousand, two hundred twelve".