122011001009 has 2 divisors, whose sum is σ = 122011001010. Its totient is φ = 122011001008.

The previous prime is 122011000973. The next prime is 122011001011. The reversal of 122011001009 is 900100110221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 120669390625 + 1341610384 = 347375^2 + 36628^2 .

It is a cyclic number.

It is not a de Polignac number, because 122011001009 - 2⁸ = 122011000753 is a prime.

Together with 122011001011, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (122011001209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61005500504 + 61005500505.

It is an arithmetic number, because the mean of its divisors is an integer number (61005500505).

Almost surely, 2^122011001009 is an apocalyptic number.

It is an amenable number.

122011001009 is a deficient number, since it is larger than the sum of its proper divisors (1).

122011001009 is an equidigital number, since it uses as much as digits as its factorization.

122011001009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36, while the sum is 17.

The spelling of 122011001009 in words is "one hundred twenty-two billion, eleven million, one thousand, nine".