1221032133311 has 8 divisors (see below), whose sum is σ = 1226059963920. Its totient is φ = 1216008762048.

The previous prime is 1221032133301. The next prime is 1221032133361. The reversal of 1221032133311 is 1133312301221.

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 1221032133311 - 2²² = 1221027939007 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1221032133301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 565526 + ... + 1661891.

It is an arithmetic number, because the mean of its divisors is an integer number (153257495490).

Almost surely, 2^{1221032133311} is an apocalyptic number.

1221032133311 is a deficient number, since it is larger than the sum of its proper divisors (5027830609).

1221032133311 is a wasteful number, since it uses less digits than its factorization.

1221032133311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2229673.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 1221032133311 its reverse (1133312301221), we get a palindrome (2354344434532).

The spelling of 1221032133311 in words is "one trillion, two hundred twenty-one billion, thirty-two million, one hundred thirty-three thousand, three hundred eleven".