1131211322201 has 4 divisors (see below), whose sum is σ = 1142411434404. Its totient is φ = 1120011210000.

The previous prime is 1131211322123. The next prime is 1131211322221. The reversal of 1131211322201 is 1022231121311.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1119256086601 + 11955235600 = 1057949^2 + 109340^2 .

It is a cyclic number.

It is not a de Polignac number, because 1131211322201 - 2¹⁴ = 1131211305817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1131211322221) 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, 5600055950 + ... + 5600056151.

It is an arithmetic number, because the mean of its divisors is an integer number (285602858601).

Almost surely, 2^{1131211322201} is an apocalyptic number.

It is an amenable number.

1131211322201 is a deficient number, since it is larger than the sum of its proper divisors (11200112203).

1131211322201 is a wasteful number, since it uses less digits than its factorization.

1131211322201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11200112202.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 1131211322201 its reverse (1022231121311), we get a palindrome (2153442443512).

The spelling of 1131211322201 in words is "one trillion, one hundred thirty-one billion, two hundred eleven million, three hundred twenty-two thousand, two hundred one".