21000000211112 has 64 divisors (see below), whose sum is σ = 43525571745600. Its totient is φ = 9438984069120.

The previous prime is 21000000211103. The next prime is 21000000211121. The reversal of 21000000211112 is 21111200000012.

It is an interprime number because it is at equal distance from previous prime (21000000211103) and next prime (21000000211121).

It is a junction number, because it is equal to n+sod(n) for n = 21000000211093 and 21000000211102.

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 15 ways as a sum of consecutive naturals, for example, 15336089 + ... + 16649192.

It is an arithmetic number, because the mean of its divisors is an integer number (680087058525).

Almost surely, 2^{21000000211112} is an apocalyptic number.

It is an amenable number.

21000000211112 is an abundant number, since it is smaller than the sum of its proper divisors (22525571534488).

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

21000000211112 is a wasteful number, since it uses less digits than its factorization.

21000000211112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31985466 (or 31985462 counting only the distinct ones).

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

Adding to 21000000211112 its reverse (21111200000012), we get a palindrome (42111200211124).

The spelling of 21000000211112 in words is "twenty-one trillion, two hundred eleven thousand, one hundred twelve".