1331301221211 has 12 divisors (see below), whose sum is σ = 1922115373368. Its totient is φ = 819262289664.

The previous prime is 1331301221209. The next prime is 1331301221233. The reversal of 1331301221211 is 1121221031331.

It is not a de Polignac number, because 1331301221211 - 2¹ = 1331301221209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1331301221291) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1312919830 + ... + 1312920843.

It is an arithmetic number, because the mean of its divisors is an integer number (160176281114).

Almost surely, 2^{1331301221211} is an apocalyptic number.

1331301221211 is a deficient number, since it is larger than the sum of its proper divisors (590814152157).

1331301221211 is a wasteful number, since it uses less digits than its factorization.

1331301221211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2625840702 (or 2625840689 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 1331301221211 its reverse (1121221031331), we get a palindrome (2452522252542).

The spelling of 1331301221211 in words is "one trillion, three hundred thirty-one billion, three hundred one million, two hundred twenty-one thousand, two hundred eleven".