21010100011012 has 12 divisors (see below), whose sum is σ = 42020200022080. Its totient is φ = 9004328576136.

The previous prime is 21010100010959. The next prime is 21010100011093. The reversal of 21010100011012 is 21011000101012.

21010100011012 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 21010100011012.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 375180357312 + ... + 375180357367.

Almost surely, 2^{21010100011012} is an apocalyptic number.

It is an amenable number.

21010100011012 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

21010100011012 is a wasteful number, since it uses less digits than its factorization.

21010100011012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 750360714690 (or 750360714688 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 21010100011012 its reverse (21011000101012), we get a palindrome (42021100112024).

The spelling of 21010100011012 in words is "twenty-one trillion, ten billion, one hundred million, eleven thousand, twelve".