1211121231333 has 32 divisors (see below), whose sum is σ = 1779812496000. Its totient is φ = 727840270080.

The previous prime is 1211121231293. The next prime is 1211121231379. The reversal of 1211121231333 is 3331321211121.

It is not a de Polignac number, because 1211121231333 - 2⁶ = 1211121231269 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211121231533) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9578263 + ... + 9703883.

It is an arithmetic number, because the mean of its divisors is an integer number (55619140500).

Almost surely, 2^{1211121231333} is an apocalyptic number.

1211121231333 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1211121231333 is a deficient number, since it is larger than the sum of its proper divisors (568691264667).

1211121231333 is a wasteful number, since it uses less digits than its factorization.

1211121231333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131429.

The product of its digits is 648, while the sum is 24.

Adding to 1211121231333 its reverse (3331321211121), we get a palindrome (4542442442454).

The spelling of 1211121231333 in words is "one trillion, two hundred eleven billion, one hundred twenty-one million, two hundred thirty-one thousand, three hundred thirty-three".