21210001112 has 16 divisors (see below), whose sum is σ = 41861844600. Its totient is φ = 10046842560.

The previous prime is 21210001081. The next prime is 21210001151. The reversal of 21210001112 is 21110001212.

It is a junction number, because it is equal to n+sod(n) for n = 21210001093 and 21210001102.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 69769589 + ... + 69769892.

Almost surely, 2^21210001112 is an apocalyptic number.

It is an amenable number.

21210001112 is a deficient number, since it is larger than the sum of its proper divisors (20651843488).

21210001112 is a wasteful number, since it uses less digits than its factorization.

21210001112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139539506 (or 139539502 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 21210001112 its reverse (21110001212), we get a palindrome (42320002324).

The spelling of 21210001112 in words is "twenty-one billion, two hundred ten million, one thousand, one hundred twelve".