21110201012012 has 24 divisors (see below), whose sum is σ = 42222151560960. Its totient is φ = 9046854104400.

The previous prime is 21110201011997. The next prime is 21110201012029. The reversal of 21110201012012 is 21021010201112.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14932562 + ... + 16285017.

It is an arithmetic number, because the mean of its divisors is an integer number (1759256315040).

Almost surely, 2^{21110201012012} is an apocalyptic number.

It is an amenable number.

21110201012012 is an abundant number, since it is smaller than the sum of its proper divisors (21111950548948).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21110201012012 is a wasteful number, since it uses less digits than its factorization.

21110201012012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31241741 (or 31241739 counting only the distinct ones).

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

Adding to 21110201012012 its reverse (21021010201112), we get a palindrome (42131211213124).

The spelling of 21110201012012 in words is "twenty-one trillion, one hundred ten billion, two hundred one million, twelve thousand, twelve".