21003201112 has 8 divisors (see below), whose sum is σ = 39381002100. Its totient is φ = 10501600552.

The previous prime is 21003201083. The next prime is 21003201113. The reversal of 21003201112 is 21110230012.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×21003201112² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21003201092 and 21003201101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21003201113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1312700062 + ... + 1312700077.

Almost surely, 2^21003201112 is an apocalyptic number.

It is an amenable number.

21003201112 is a deficient number, since it is larger than the sum of its proper divisors (18377800988).

21003201112 is a wasteful number, since it uses less digits than its factorization.

21003201112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2625400145 (or 2625400141 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 21003201112 its reverse (21110230012), we get a palindrome (42113431124).

The spelling of 21003201112 in words is "twenty-one billion, three million, two hundred one thousand, one hundred twelve".