1011212010009 has 10 divisors (see below), whose sum is σ = 1510575965690. Its totient is φ = 674141339952.

The previous prime is 1011212009993. The next prime is 1011212010043. The reversal of 1011212010009 is 9000102121101.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 690182115984 + 321029894025 = 830772^2 + 566595^2 .

It is not a de Polignac number, because 1011212010009 - 2⁴ = 1011212009993 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1011212009973 and 1011212010000.

It is not an unprimeable number, because it can be changed into a prime (1011212010059) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 6242049364 + ... + 6242049525.

It is an arithmetic number, because the mean of its divisors is an integer number (151057596569).

Almost surely, 2^{1011212010009} is an apocalyptic number.

It is an amenable number.

1011212010009 is a deficient number, since it is larger than the sum of its proper divisors (499363955681).

1011212010009 is an equidigital number, since it uses as much as digits as its factorization.

1011212010009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12484098901 (or 12484098892 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 18.

The spelling of 1011212010009 in words is "one trillion, eleven billion, two hundred twelve million, ten thousand, nine".