211100123103112 has 8 divisors (see below), whose sum is σ = 395812730818350. Its totient is φ = 105550061551552.

The previous prime is 211100123103101. The next prime is 211100123103131. The reversal of 211100123103112 is 211301321001112.

It can be written as a sum of positive squares in only one way, i.e., 143131409772516 + 67968713330596 = 11963754^2 + 8244314^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 211100123103112.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13193757693937 + ... + 13193757693952.

Almost surely, 2^{211100123103112} is an apocalyptic number.

It is an amenable number.

211100123103112 is a deficient number, since it is larger than the sum of its proper divisors (184712607715238).

211100123103112 is a wasteful number, since it uses less digits than its factorization.

211100123103112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26387515387895 (or 26387515387891 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 19.

Adding to 211100123103112 its reverse (211301321001112), we get a palindrome (422401444104224).

The spelling of 211100123103112 in words is "two hundred eleven trillion, one hundred billion, one hundred twenty-three million, one hundred three thousand, one hundred twelve".