1211020130233 has 8 divisors (see below), whose sum is σ = 1282393522152. Its totient is φ = 1139661950976.

The previous prime is 1211020130209. The next prime is 1211020130291. The reversal of 1211020130233 is 3320310201121.

It can be written as a sum of positive squares in 4 ways, for example, as 67343883049 + 1143676247184 = 259507^2 + 1069428^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1211020130233 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1211020130233.

It is not an unprimeable number, because it can be changed into a prime (1211020140233) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3639060 + ... + 3957877.

It is an arithmetic number, because the mean of its divisors is an integer number (160299190269).

Almost surely, 2^{1211020130233} is an apocalyptic number.

It is an amenable number.

1211020130233 is a deficient number, since it is larger than the sum of its proper divisors (71373391919).

1211020130233 is an equidigital number, since it uses as much as digits as its factorization.

1211020130233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7606331.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 1211020130233 its reverse (3320310201121), we get a palindrome (4531330331354).

The spelling of 1211020130233 in words is "one trillion, two hundred eleven billion, twenty million, one hundred thirty thousand, two hundred thirty-three".