1211300321011 has 8 divisors (see below), whose sum is σ = 1324131922944. Its totient is φ = 1098920950920.

The previous prime is 1211300321009. The next prime is 1211300321039. The reversal of 1211300321011 is 1101230031121.

It is a happy number.

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 1211300321011 - 2¹ = 1211300321009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1211300321311) 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, 113052355 + ... + 113063068.

It is an arithmetic number, because the mean of its divisors is an integer number (165516490368).

Almost surely, 2^{1211300321011} is an apocalyptic number.

1211300321011 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1211300321011 is a deficient number, since it is larger than the sum of its proper divisors (112831601933).

1211300321011 is a wasteful number, since it uses less digits than its factorization.

1211300321011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226115921.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 1211300321011 its reverse (1101230031121), we get a palindrome (2312530352132).

The spelling of 1211300321011 in words is "one trillion, two hundred eleven billion, three hundred million, three hundred twenty-one thousand, eleven".