1211100220133 has 8 divisors (see below), whose sum is σ = 1213355109120. Its totient is φ = 1208847098880.

The previous prime is 1211100220129. The next prime is 1211100220139. The reversal of 1211100220133 is 3310220011121.

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 1211100220133 - 2² = 1211100220129 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 (1211100220139) 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, 933548 + ... + 1814858.

It is an arithmetic number, because the mean of its divisors is an integer number (151669388640).

Almost surely, 2^{1211100220133} is an apocalyptic number.

It is an amenable number.

1211100220133 is a deficient number, since it is larger than the sum of its proper divisors (2254888987).

1211100220133 is an equidigital number, since it uses as much as digits as its factorization.

1211100220133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 883867.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 1211100220133 its reverse (3310220011121), we get a palindrome (4521320231254).

The spelling of 1211100220133 in words is "one trillion, two hundred eleven billion, one hundred million, two hundred twenty thousand, one hundred thirty-three".