211121101111112 has 8 divisors (see below), whose sum is σ = 395852064583350. Its totient is φ = 105560550555552.

The previous prime is 211121101111073. The next prime is 211121101111321. The reversal of 211121101111112 is 211111101121112.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 201861410346436 + 9259690764676 = 14207794^2 + 3042974^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13195068819437 + ... + 13195068819452.

Almost surely, 2^{211121101111112} is an apocalyptic number.

It is an amenable number.

211121101111112 is a deficient number, since it is larger than the sum of its proper divisors (184730963472238).

211121101111112 is a wasteful number, since it uses less digits than its factorization.

211121101111112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26390137638895 (or 26390137638891 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 17.

Adding to 211121101111112 its reverse (211111101121112), we get a palindrome (422232202232224).

The spelling of 211121101111112 in words is "two hundred eleven trillion, one hundred twenty-one billion, one hundred one million, one hundred eleven thousand, one hundred twelve".