21110102012212 has 48 divisors (see below), whose sum is σ = 39086752642560. Its totient is φ = 9962484048000.

The previous prime is 21110102012173. The next prime is 21110102012227. The reversal of 21110102012212 is 21221020101112.

It is a congruent number.

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, 11739787 + ... + 13418002.

It is an arithmetic number, because the mean of its divisors is an integer number (814307346720).

Almost surely, 2^{21110102012212} is an apocalyptic number.

It is an amenable number.

21110102012212 is a deficient number, since it is larger than the sum of its proper divisors (17976650630348).

21110102012212 is a wasteful number, since it uses less digits than its factorization.

21110102012212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25157992 (or 25157990 counting only the distinct ones).

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

Adding to 21110102012212 its reverse (21221020101112), we get a palindrome (42331122113324).

The spelling of 21110102012212 in words is "twenty-one trillion, one hundred ten billion, one hundred two million, twelve thousand, two hundred twelve".