1221233133211 has 8 divisors (see below), whose sum is σ = 1503056164064. Its totient is φ = 966250391040.

The previous prime is 1221233133209. The next prime is 1221233133247. The reversal of 1221233133211 is 1123313321221.

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 1221233133211 - 2¹ = 1221233133209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1221233133011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6710072070 + ... + 6710072251.

It is an arithmetic number, because the mean of its divisors is an integer number (187882020508).

Almost surely, 2^{1221233133211} is an apocalyptic number.

1221233133211 is a deficient number, since it is larger than the sum of its proper divisors (281823030853).

1221233133211 is a wasteful number, since it uses less digits than its factorization.

1221233133211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13420144341.

The product of its digits is 1296, while the sum is 25.

Adding to 1221233133211 its reverse (1123313321221), we get a palindrome (2344546454432).

The spelling of 1221233133211 in words is "one trillion, two hundred twenty-one billion, two hundred thirty-three million, one hundred thirty-three thousand, two hundred eleven".