1211021333133 has 16 divisors (see below), whose sum is σ = 1617759736320. Its totient is φ = 805816104624.

The previous prime is 1211021333117. The next prime is 1211021333147. The reversal of 1211021333133 is 3313331201121.

It is not a de Polignac number, because 1211021333133 - 2⁴ = 1211021333117 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211021333173) 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 15 ways as a sum of consecutive naturals, for example, 5609688 + ... + 5821566.

It is an arithmetic number, because the mean of its divisors is an integer number (101109983520).

Almost surely, 2^{1211021333133} is an apocalyptic number.

It is an amenable number.

1211021333133 is a deficient number, since it is larger than the sum of its proper divisors (406738403187).

1211021333133 is a wasteful number, since it uses less digits than its factorization.

1211021333133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215488.

The product of its (nonzero) digits is 972, while the sum is 24.

Adding to 1211021333133 its reverse (3313331201121), we get a palindrome (4524352534254).

The spelling of 1211021333133 in words is "one trillion, two hundred eleven billion, twenty-one million, three hundred thirty-three thousand, one hundred thirty-three".