2355188911121 has 2 divisors, whose sum is σ = 2355188911122. Its totient is φ = 2355188911120.

The previous prime is 2355188911099. The next prime is 2355188911151. The reversal of 2355188911121 is 1211198815532.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2030807404096 + 324381507025 = 1425064^2 + 569545^2 .

It is a cyclic number.

It is not a de Polignac number, because 2355188911121 - 2²² = 2355184716817 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (2355188911151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1177594455560 + 1177594455561.

It is an arithmetic number, because the mean of its divisors is an integer number (1177594455561).

Almost surely, 2^{2355188911121} is an apocalyptic number.

It is an amenable number.

2355188911121 is a deficient number, since it is larger than the sum of its proper divisors (1).

2355188911121 is an equidigital number, since it uses as much as digits as its factorization.

2355188911121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 172800, while the sum is 47.

The spelling of 2355188911121 in words is "two trillion, three hundred fifty-five billion, one hundred eighty-eight million, nine hundred eleven thousand, one hundred twenty-one".