21211000112 has 10 divisors (see below), whose sum is σ = 41096312748. Its totient is φ = 10605500048.

The previous prime is 21211000103. The next prime is 21211000117. The reversal of 21211000112 is 21100011212.

It is a junction number, because it is equal to n+sod(n) for n = 21211000093 and 21211000102.

It is not an unprimeable number, because it can be changed into a prime (21211000117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 662843738 + ... + 662843769.

Almost surely, 2^21211000112 is an apocalyptic number.

It is an amenable number.

21211000112 is a deficient number, since it is larger than the sum of its proper divisors (19885312636).

21211000112 is a wasteful number, since it uses less digits than its factorization.

21211000112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1325687515 (or 1325687509 counting only the distinct ones).

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

Adding to 21211000112 its reverse (21100011212), we get a palindrome (42311011324).

The spelling of 21211000112 in words is "twenty-one billion, two hundred eleven million, one hundred twelve", and thus it is an aban number.