1327209121 has 4 divisors (see below), whose sum is σ = 1516810432. Its totient is φ = 1137607812.

The previous prime is 1327209119. The next prime is 1327209139. The reversal of 1327209121 is 1219027231.

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 1327209121 - 2¹ = 1327209119 is a prime.

It is a super-2 number, since 2×1327209121² = 3522968101731185282, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1327209121.

It is not an unprimeable number, because it can be changed into a prime (1327209151) 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, 94800645 + ... + 94800658.

It is an arithmetic number, because the mean of its divisors is an integer number (379202608).

Almost surely, 2^1327209121 is an apocalyptic number.

It is an amenable number.

1327209121 is a deficient number, since it is larger than the sum of its proper divisors (189601311).

1327209121 is an equidigital number, since it uses as much as digits as its factorization.

1327209121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189601310.

The product of its (nonzero) digits is 1512, while the sum is 28.

The square root of 1327209121 is about 36430.8814194771. The cubic root of 1327209121 is about 1098.9546876874.

The spelling of 1327209121 in words is "one billion, three hundred twenty-seven million, two hundred nine thousand, one hundred twenty-one".