1211343140011 has 8 divisors (see below), whose sum is σ = 1220106308400. Its totient is φ = 1202580664320.

The previous prime is 1211343139973. The next prime is 1211343140017. The reversal of 1211343140011 is 1100413431121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1211343140011 - 2¹³ = 1211343131819 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1211343140017) 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, 3639291 + ... + 3958171.

It is an arithmetic number, because the mean of its divisors is an integer number (152513288550).

Almost surely, 2^{1211343140011} is an apocalyptic number.

1211343140011 is a deficient number, since it is larger than the sum of its proper divisors (8763168389).

1211343140011 is a wasteful number, since it uses less digits than its factorization.

1211343140011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 346349.

The product of its (nonzero) digits is 288, while the sum is 22.

Adding to 1211343140011 its reverse (1100413431121), we get a palindrome (2311756571132).

The spelling of 1211343140011 in words is "one trillion, two hundred eleven billion, three hundred forty-three million, one hundred forty thousand, eleven".