1211326201 has 8 divisors (see below), whose sum is σ = 1254787200. Its totient is φ = 1167978000.

The previous prime is 1211326117. The next prime is 1211326231. The reversal of 1211326201 is 1026231121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1211326201 - 2¹⁹ = 1210801913 is a prime.

It is a super-2 number, since 2×1211326201² = 2934622330458184802, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1211326231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6031 + ... + 49588.

It is an arithmetic number, because the mean of its divisors is an integer number (156848400).

Almost surely, 2^1211326201 is an apocalyptic number.

It is an amenable number.

1211326201 is a deficient number, since it is larger than the sum of its proper divisors (43460999).

1211326201 is an equidigital number, since it uses as much as digits as its factorization.

1211326201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56399.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 1211326201 is about 34804.1118404133. Note that the first 3 decimals coincide. The cubic root of 1211326201 is about 1065.9914066730.

Adding to 1211326201 its reverse (1026231121), we get a palindrome (2237557322).

The spelling of 1211326201 in words is "one billion, two hundred eleven million, three hundred twenty-six thousand, two hundred one".