1121264122655 has 16 divisors (see below), whose sum is σ = 1346877206784. Its totient is φ = 896104788480.

The previous prime is 1121264122613. The next prime is 1121264122661. The reversal of 1121264122655 is 5562214621211.

It is not a de Polignac number, because 1121264122655 - 2¹⁸ = 1121263860511 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32054375 + ... + 32089335.

It is an arithmetic number, because the mean of its divisors is an integer number (84179825424).

Almost surely, 2^{1121264122655} is an apocalyptic number.

1121264122655 is a deficient number, since it is larger than the sum of its proper divisors (225613084129).

1121264122655 is a wasteful number, since it uses less digits than its factorization.

1121264122655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41266.

The product of its digits is 57600, while the sum is 38.

Adding to 1121264122655 its reverse (5562214621211), we get a palindrome (6683478743866).

The spelling of 1121264122655 in words is "one trillion, one hundred twenty-one billion, two hundred sixty-four million, one hundred twenty-two thousand, six hundred fifty-five".