1131022020211 has 4 divisors (see below), whose sum is σ = 1131364031992. Its totient is φ = 1130680008432.

The previous prime is 1131022020199. The next prime is 1131022020217. The reversal of 1131022020211 is 1120202201311.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1131022020211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1131022020217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 171000930 + ... + 171007543.

It is an arithmetic number, because the mean of its divisors is an integer number (282841007998).

Almost surely, 2^{1131022020211} is an apocalyptic number.

1131022020211 is a deficient number, since it is larger than the sum of its proper divisors (342011781).

1131022020211 is an equidigital number, since it uses as much as digits as its factorization.

1131022020211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 342011780.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 1131022020211 its reverse (1120202201311), we get a palindrome (2251224221522).

The spelling of 1131022020211 in words is "one trillion, one hundred thirty-one billion, twenty-two million, twenty thousand, two hundred eleven".