1201022101309 has 2 divisors, whose sum is σ = 1201022101310. Its totient is φ = 1201022101308.

The previous prime is 1201022101291. The next prime is 1201022101343. The reversal of 1201022101309 is 9031012201021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1158253793284 + 42768308025 = 1076222^2 + 206805^2 .

It is a cyclic number.

It is not a de Polignac number, because 1201022101309 - 2¹¹ = 1201022099261 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1201022101309.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1201022141309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600511050654 + 600511050655.

It is an arithmetic number, because the mean of its divisors is an integer number (600511050655).

Almost surely, 2^{1201022101309} is an apocalyptic number.

It is an amenable number.

1201022101309 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201022101309 is an equidigital number, since it uses as much as digits as its factorization.

1201022101309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 22.

The spelling of 1201022101309 in words is "one trillion, two hundred one billion, twenty-two million, one hundred one thousand, three hundred nine".