1131321212206 has 16 divisors (see below), whose sum is σ = 1703114902944. Its totient is φ = 563618409984.

The previous prime is 1131321212201. The next prime is 1131321212213. The reversal of 1131321212206 is 6022121231311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131321212201) 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, 506311 + ... + 1587133.

It is an arithmetic number, because the mean of its divisors is an integer number (106444681434).

Almost surely, 2^{1131321212206} is an apocalyptic number.

1131321212206 is a deficient number, since it is larger than the sum of its proper divisors (571793690738).

1131321212206 is a wasteful number, since it uses less digits than its factorization.

1131321212206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1082715.

The product of its (nonzero) digits is 864, while the sum is 25.

Adding to 1131321212206 its reverse (6022121231311), we get a palindrome (7153442443517).

The spelling of 1131321212206 in words is "one trillion, one hundred thirty-one billion, three hundred twenty-one million, two hundred twelve thousand, two hundred six".