1131202221211 has 16 divisors (see below), whose sum is σ = 1145320862400. Its totient is φ = 1117146562560.

The previous prime is 1131202221137. The next prime is 1131202221217. The reversal of 1131202221211 is 1121222021311.

It is a cyclic number.

It is not a de Polignac number, because 1131202221211 - 2²¹ = 1131200124059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1131202221217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 110108971 + ... + 110119243.

It is an arithmetic number, because the mean of its divisors is an integer number (71582553900).

Almost surely, 2^{1131202221211} is an apocalyptic number.

1131202221211 is a deficient number, since it is larger than the sum of its proper divisors (14118641189).

1131202221211 is a wasteful number, since it uses less digits than its factorization.

1131202221211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13206.

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 1131202221211 its reverse (1121222021311), we get a palindrome (2252424242522).

The spelling of 1131202221211 in words is "one trillion, one hundred thirty-one billion, two hundred two million, two hundred twenty-one thousand, two hundred eleven".