1101001012 has 12 divisors (see below), whose sum is σ = 1963105956. Its totient is φ = 540113600.

The previous prime is 1101001009. The next prime is 1101001019. The reversal of 1101001012 is 2101001011.

It can be written as a sum of positive squares in 2 ways, for example, as 986211216 + 114789796 = 31404^2 + 10714^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1101000986 and 1101001004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1101001019) 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, 2596489 + ... + 2596912.

It is an arithmetic number, because the mean of its divisors is an integer number (163592163).

Almost surely, 2^1101001012 is an apocalyptic number.

It is an amenable number.

1101001012 is a deficient number, since it is larger than the sum of its proper divisors (862104944).

1101001012 is a wasteful number, since it uses less digits than its factorization.

1101001012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5193458 (or 5193456 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 7.

The square root of 1101001012 is about 33181.3352956146. The cubic root of 1101001012 is about 1032.5931492429.

Adding to 1101001012 its reverse (2101001011), we get a palindrome (3202002023).

Subtracting 1101001012 from its reverse (2101001011), we obtain a palindrome (999999999).

The spelling of 1101001012 in words is "one billion, one hundred one million, one thousand, twelve".