1011231012112 has 40 divisors (see below), whose sum is σ = 2152047706560. Its totient is φ = 458177892480.

The previous prime is 1011231012097. The next prime is 1011231012137. The reversal of 1011231012112 is 2112101321101.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72306439 + ... + 72320422.

It is an arithmetic number, because the mean of its divisors is an integer number (53801192664).

Almost surely, 2^{1011231012112} is an apocalyptic number.

It is an amenable number.

1011231012112 is an abundant number, since it is smaller than the sum of its proper divisors (1140816694448).

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

1011231012112 is a wasteful number, since it uses less digits than its factorization.

1011231012112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144626911 (or 144626905 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 1011231012112 its reverse (2112101321101), we get a palindrome (3123332333213).

The spelling of 1011231012112 in words is "one trillion, eleven billion, two hundred thirty-one million, twelve thousand, one hundred twelve".