1210420113109 has 2 divisors, whose sum is σ = 1210420113110. Its totient is φ = 1210420113108.

The previous prime is 1210420112999. The next prime is 1210420113127. The reversal of 1210420113109 is 9013110240121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1198854186084 + 11565927025 = 1094922^2 + 107545^2 .

It is a cyclic number.

It is not a de Polignac number, because 1210420113109 - 2¹³ = 1210420104917 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1210420113209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605210056554 + 605210056555.

It is an arithmetic number, because the mean of its divisors is an integer number (605210056555).

Almost surely, 2^{1210420113109} is an apocalyptic number.

It is an amenable number.

1210420113109 is a deficient number, since it is larger than the sum of its proper divisors (1).

1210420113109 is an equidigital number, since it uses as much as digits as its factorization.

1210420113109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 25.

The spelling of 1210420113109 in words is "one trillion, two hundred ten billion, four hundred twenty million, one hundred thirteen thousand, one hundred nine".