1116121001611 has 16 divisors (see below), whose sum is σ = 1393441620480. Its totient is φ = 868508340480.

The previous prime is 1116121001507. The next prime is 1116121001621. The reversal of 1116121001611 is 1161001216111.

It is not a de Polignac number, because 1116121001611 - 2⁷ = 1116121001483 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1116121001621) 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, 9913126 + ... + 10025083.

It is an arithmetic number, because the mean of its divisors is an integer number (87090101280).

Almost surely, 2^{1116121001611} is an apocalyptic number.

1116121001611 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1116121001611 is a deficient number, since it is larger than the sum of its proper divisors (277320618869).

1116121001611 is a wasteful number, since it uses less digits than its factorization.

1116121001611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19938954.

The product of its (nonzero) digits is 72, while the sum is 22.

Adding to 1116121001611 its reverse (1161001216111), we get a palindrome (2277122217722).

The spelling of 1116121001611 in words is "one trillion, one hundred sixteen billion, one hundred twenty-one million, one thousand, six hundred eleven".