1012112101111 has 4 divisors (see below), whose sum is σ = 1012170329352. Its totient is φ = 1012053872872.

The previous prime is 1012112101051. The next prime is 1012112101129. The reversal of 1012112101111 is 1111012112101.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1012112101111 - 2⁷ = 1012112100983 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1012112101091 and 1012112101100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012112101171) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29088040 + ... + 29122813.

It is an arithmetic number, because the mean of its divisors is an integer number (253042582338).

Almost surely, 2^{1012112101111} is an apocalyptic number.

1012112101111 is a deficient number, since it is larger than the sum of its proper divisors (58228241).

1012112101111 is an equidigital number, since it uses as much as digits as its factorization.

1012112101111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58228240.

The product of its (nonzero) digits is 4, while the sum is 13.

Adding to 1012112101111 its reverse (1111012112101), we get a palindrome (2123124213212).

It can be divided in two parts, 1012112101 and 111, that multiplied together give a palindrome (112344443211).

The spelling of 1012112101111 in words is "one trillion, twelve billion, one hundred twelve million, one hundred one thousand, one hundred eleven".