1201012101209 has 2 divisors, whose sum is σ = 1201012101210. Its totient is φ = 1201012101208.

The previous prime is 1201012101197. The next prime is 1201012101221. The reversal of 1201012101209 is 9021012101021.

It is a balanced prime because it is at equal distance from previous prime (1201012101197) and next prime (1201012101221).

It can be written as a sum of positive squares in only one way, i.e., 1200909139600 + 102961609 = 1095860^2 + 10147^2 .

It is a cyclic number.

It is not a de Polignac number, because 1201012101209 - 2¹² = 1201012097113 is a prime.

It is not a weakly prime, because it can be changed into another prime (1201012101229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600506050604 + 600506050605.

It is an arithmetic number, because the mean of its divisors is an integer number (600506050605).

Almost surely, 2^{1201012101209} is an apocalyptic number.

It is an amenable number.

1201012101209 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201012101209 is an equidigital number, since it uses as much as digits as its factorization.

1201012101209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 20.

The spelling of 1201012101209 in words is "one trillion, two hundred one billion, twelve million, one hundred one thousand, two hundred nine".