611153116121 has 2 divisors, whose sum is σ = 611153116122. Its totient is φ = 611153116120.

The previous prime is 611153116111. The next prime is 611153116129. The reversal of 611153116121 is 121611351116.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 596078187721 + 15074928400 = 772061^2 + 122780^2 .

It is a cyclic number.

It is not a de Polignac number, because 611153116121 - 2¹⁴ = 611153099737 is a prime.

It is not a weakly prime, because it can be changed into another prime (611153116129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305576558060 + 305576558061.

It is an arithmetic number, because the mean of its divisors is an integer number (305576558061).

Almost surely, 2^611153116121 is an apocalyptic number.

It is an amenable number.

611153116121 is a deficient number, since it is larger than the sum of its proper divisors (1).

611153116121 is an equidigital number, since it uses as much as digits as its factorization.

611153116121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1080, while the sum is 29.

Adding to 611153116121 its reverse (121611351116), we get a palindrome (732764467237).

The spelling of 611153116121 in words is "six hundred eleven billion, one hundred fifty-three million, one hundred sixteen thousand, one hundred twenty-one".