1213111032411 has 4 divisors (see below), whose sum is σ = 1617481376552. Its totient is φ = 808740688272.

The previous prime is 1213111032389. The next prime is 1213111032437. The reversal of 1213111032411 is 1142301113121.

It is a happy number.

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

It is not a de Polignac number, because 1213111032411 - 2¹⁹ = 1213110508123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1213111034411) 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, 202185172066 + ... + 202185172071.

It is an arithmetic number, because the mean of its divisors is an integer number (404370344138).

Almost surely, 2^{1213111032411} is an apocalyptic number.

1213111032411 is a deficient number, since it is larger than the sum of its proper divisors (404370344141).

1213111032411 is an equidigital number, since it uses as much as digits as its factorization.

1213111032411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404370344140.

The product of its (nonzero) digits is 144, while the sum is 21.

Adding to 1213111032411 its reverse (1142301113121), we get a palindrome (2355412145532).

The spelling of 1213111032411 in words is "one trillion, two hundred thirteen billion, one hundred eleven million, thirty-two thousand, four hundred eleven".