1212011011309 has 8 divisors (see below), whose sum is σ = 1386280679168. Its totient is φ = 1038022652880.

The previous prime is 1212011011303. The next prime is 1212011011319. The reversal of 1212011011309 is 9031101102121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1212011011309 - 2²⁷ = 1211876793581 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1212011011309.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212011011303) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70318122 + ... + 70335355.

It is an arithmetic number, because the mean of its divisors is an integer number (173285084896).

Almost surely, 2^{1212011011309} is an apocalyptic number.

It is an amenable number.

1212011011309 is a deficient number, since it is larger than the sum of its proper divisors (174269667859).

1212011011309 is a wasteful number, since it uses less digits than its factorization.

1212011011309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140654715.

The product of its (nonzero) digits is 108, while the sum is 22.

The spelling of 1212011011309 in words is "one trillion, two hundred twelve billion, eleven million, eleven thousand, three hundred nine".