1212012002909 has 2 divisors, whose sum is σ = 1212012002910. Its totient is φ = 1212012002908.

The previous prime is 1212012002899. The next prime is 1212012002921. The reversal of 1212012002909 is 9092002102121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1209109164025 + 2902838884 = 1099595^2 + 53878^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1212012002909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1212012002959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606006001454 + 606006001455.

It is an arithmetic number, because the mean of its divisors is an integer number (606006001455).

Almost surely, 2^{1212012002909} is an apocalyptic number.

It is an amenable number.

1212012002909 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212012002909 is an equidigital number, since it uses as much as digits as its factorization.

1212012002909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 29.

The spelling of 1212012002909 in words is "one trillion, two hundred twelve billion, twelve million, two thousand, nine hundred nine".