1121610611711 has 4 divisors (see below), whose sum is σ = 1121615777424. Its totient is φ = 1121605446000.

The previous prime is 1121610611701. The next prime is 1121610611713. The reversal of 1121610611711 is 1171160161211.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1121610611711 - 2³⁰ = 1120536869887 is a prime.

It is a super-2 number, since 2×1121610611711² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121610611713) 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, 2242190 + ... + 2696411.

It is an arithmetic number, because the mean of its divisors is an integer number (280403944356).

Almost surely, 2^{1121610611711} is an apocalyptic number.

1121610611711 is a deficient number, since it is larger than the sum of its proper divisors (5165713).

1121610611711 is an equidigital number, since it uses as much as digits as its factorization.

1121610611711 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5165712.

The product of its (nonzero) digits is 504, while the sum is 29.

Adding to 1121610611711 its reverse (1171160161211), we get a palindrome (2292770772922).

The spelling of 1121610611711 in words is "one trillion, one hundred twenty-one billion, six hundred ten million, six hundred eleven thousand, seven hundred eleven".