1201132112309 has 4 divisors (see below), whose sum is σ = 1201148661420. Its totient is φ = 1201115563200.

The previous prime is 1201132112293. The next prime is 1201132112311. The reversal of 1201132112309 is 9032112311021.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1156007731684 + 45124380625 = 1075178^2 + 212425^2 .

It is a cyclic number.

It is not a de Polignac number, because 1201132112309 - 2⁴ = 1201132112293 is a prime.

It is a super-2 number, since 2×1201132112309² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201132114309) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8165204 + ... + 8311005.

It is an arithmetic number, because the mean of its divisors is an integer number (300287165355).

Almost surely, 2^{1201132112309} is an apocalyptic number.

It is an amenable number.

1201132112309 is a deficient number, since it is larger than the sum of its proper divisors (16549111).

1201132112309 is an equidigital number, since it uses as much as digits as its factorization.

1201132112309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16549110.

The product of its (nonzero) digits is 648, while the sum is 26.

The spelling of 1201132112309 in words is "one trillion, two hundred one billion, one hundred thirty-two million, one hundred twelve thousand, three hundred nine".