1011000111012 has 42 divisors (see below), whose sum is σ = 2652661821558. Its totient is φ = 337000036032.

The previous prime is 1011000110999. The next prime is 1011000111019. The reversal of 1011000111012 is 2101110001101.

It can be written as a sum of positive squares in only one way, i.e., 826051947876 + 184948163136 = 908874^2 + 430056^2 .

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 1011000110985 and 1011000111003.

It is not an unprimeable number, because it can be changed into a prime (1011000111019) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 173351013 + ... + 173356844.

It is an arithmetic number, because the mean of its divisors is an integer number (63158614799).

Almost surely, 2^{1011000111012} is an apocalyptic number.

1011000111012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1011000111012 is an abundant number, since it is smaller than the sum of its proper divisors (1641661710546).

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

1011000111012 is an equidigital number, since it uses as much as digits as its factorization.

1011000111012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 346707879 (or 346707862 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 9.

Adding to 1011000111012 its reverse (2101110001101), we get a palindrome (3112110112113).

The spelling of 1011000111012 in words is "one trillion, eleven billion, one hundred eleven thousand, twelve".