10021111112 has 8 divisors (see below), whose sum is σ = 18789583350. Its totient is φ = 5010555552.

The previous prime is 10021111103. The next prime is 10021111129. The reversal of 10021111112 is 21111112001.

It can be written as a sum of positive squares in only one way, i.e., 6553550116 + 3467560996 = 80954^2 + 58886^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 10021111093 and 10021111102.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 626319437 + ... + 626319452.

Almost surely, 2^10021111112 is an apocalyptic number.

It is an amenable number.

10021111112 is a deficient number, since it is larger than the sum of its proper divisors (8768472238).

10021111112 is a wasteful number, since it uses less digits than its factorization.

10021111112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1252638895 (or 1252638891 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 10021111112 its reverse (21111112001), we get a palindrome (31132223113).

The spelling of 10021111112 in words is "ten billion, twenty-one million, one hundred eleven thousand, one hundred twelve".