1201201109 has 4 divisors (see below), whose sum is σ = 1264422240. Its totient is φ = 1137979980.

The previous prime is 1201201093. The next prime is 1201201121. The reversal of 1201201109 is 9011021021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1201201109 - 2⁴ = 1201201093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201201129) 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 in 3 ways as a sum of consecutive naturals, for example, 31610537 + ... + 31610574.

It is an arithmetic number, because the mean of its divisors is an integer number (316105560).

Almost surely, 2^1201201109 is an apocalyptic number.

1201201109 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

1201201109 is a deficient number, since it is larger than the sum of its proper divisors (63221131).

1201201109 is an equidigital number, since it uses as much as digits as its factorization.

1201201109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63221130.

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

The square root of 1201201109 is about 34658.3483305249. The cubic root of 1201201109 is about 1063.0129978378.

The spelling of 1201201109 in words is "one billion, two hundred one million, two hundred one thousand, one hundred nine".