1011111121112 has 16 divisors (see below), whose sum is σ = 1961206916400. Its totient is φ = 488122610080.

The previous prime is 1011111121081. The next prime is 1011111121123. The reversal of 1011111121112 is 2111211111101.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2179118564 + ... + 2179119027.

It is an arithmetic number, because the mean of its divisors is an integer number (122575432275).

Almost surely, 2^{1011111121112} is an apocalyptic number.

It is an amenable number.

1011111121112 is a deficient number, since it is larger than the sum of its proper divisors (950095795288).

1011111121112 is a wasteful number, since it uses less digits than its factorization.

1011111121112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4358237626 (or 4358237622 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 14.

Adding to 1011111121112 its reverse (2111211111101), we get a palindrome (3122322232213).

The spelling of 1011111121112 in words is "one trillion, eleven billion, one hundred eleven million, one hundred twenty-one thousand, one hundred twelve".