21210110120012 has 96 divisors (see below), whose sum is σ = 41530564373760. Its totient is φ = 9394756197120.

The previous prime is 21210110119949. The next prime is 21210110120083. The reversal of 21210110120012 is 21002101101212.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2483906039 + ... + 2483914577.

It is an arithmetic number, because the mean of its divisors is an integer number (432610045560).

Almost surely, 2^{21210110120012} is an apocalyptic number.

21210110120012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21210110120012 is a deficient number, since it is larger than the sum of its proper divisors (20320454253748).

21210110120012 is a wasteful number, since it uses less digits than its factorization.

21210110120012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11511 (or 11509 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 21210110120012 its reverse (21002101101212), we get a palindrome (42212211221224).

It can be divided in two parts, 212101101200 and 12, that added together give a palindrome (212101101212).

The spelling of 21210110120012 in words is "twenty-one trillion, two hundred ten billion, one hundred ten million, one hundred twenty thousand, twelve".