120221211109 has 2 divisors, whose sum is σ = 120221211110. Its totient is φ = 120221211108.

The previous prime is 120221211107. The next prime is 120221211161. The reversal of 120221211109 is 901112122021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 85554495009 + 34666716100 = 292497^2 + 186190^2 .

It is a cyclic number.

It is not a de Polignac number, because 120221211109 - 2¹ = 120221211107 is a prime.

Together with 120221211107, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 120221211109.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120221211107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60110605554 + 60110605555.

It is an arithmetic number, because the mean of its divisors is an integer number (60110605555).

Almost surely, 2^120221211109 is an apocalyptic number.

It is an amenable number.

120221211109 is a deficient number, since it is larger than the sum of its proper divisors (1).

120221211109 is an equidigital number, since it uses as much as digits as its factorization.

120221211109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 22.

The spelling of 120221211109 in words is "one hundred twenty billion, two hundred twenty-one million, two hundred eleven thousand, one hundred nine".