1212321333311 has 16 divisors (see below), whose sum is σ = 1324796686080. Its totient is φ = 1100224451520.

The previous prime is 1212321333269. The next prime is 1212321333323. The reversal of 1212321333311 is 1133331232121.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1212321333311 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 (1212321333511) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23979686 + ... + 24030188.

It is an arithmetic number, because the mean of its divisors is an integer number (82799792880).

Almost surely, 2^{1212321333311} is an apocalyptic number.

1212321333311 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1212321333311 is a deficient number, since it is larger than the sum of its proper divisors (112475352769).

1212321333311 is a wasteful number, since it uses less digits than its factorization.

1212321333311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54206.

The product of its digits is 1944, while the sum is 26.

Adding to 1212321333311 its reverse (1133331232121), we get a palindrome (2345652565432).

The spelling of 1212321333311 in words is "one trillion, two hundred twelve billion, three hundred twenty-one million, three hundred thirty-three thousand, three hundred eleven".