1131220210109 has 16 divisors (see below), whose sum is σ = 1237566750720. Its totient is φ = 1025461730160.

The previous prime is 1131220210063. The next prime is 1131220210139. The reversal of 1131220210109 is 9010120221311.

It is a cyclic number.

It is not a de Polignac number, because 1131220210109 - 2¹² = 1131220206013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131220210139) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6769052 + ... + 6934154.

It is an arithmetic number, because the mean of its divisors is an integer number (77347921920).

Almost surely, 2^{1131220210109} is an apocalyptic number.

It is an amenable number.

1131220210109 is a deficient number, since it is larger than the sum of its proper divisors (106346540611).

1131220210109 is a wasteful number, since it uses less digits than its factorization.

1131220210109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166880.

The product of its (nonzero) digits is 216, while the sum is 23.

It can be divided in two parts, 11312202 and 10109, that added together give a palindrome (11322311).

The spelling of 1131220210109 in words is "one trillion, one hundred thirty-one billion, two hundred twenty million, two hundred ten thousand, one hundred nine".