1121015455 has 32 divisors (see below), whose sum is σ = 1608833664. Its totient is φ = 733764096.

The previous prime is 1121015453. The next prime is 1121015473. The reversal of 1121015455 is 5545101211.

It is a cyclic number.

It is not a de Polignac number, because 1121015455 - 2¹ = 1121015453 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121015453) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 60469 + ... + 76801.

It is an arithmetic number, because the mean of its divisors is an integer number (50276052).

Almost surely, 2^1121015455 is an apocalyptic number.

1121015455 is a deficient number, since it is larger than the sum of its proper divisors (487818209).

1121015455 is a wasteful number, since it uses less digits than its factorization.

1121015455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16435.

The product of its (nonzero) digits is 1000, while the sum is 25.

The square root of 1121015455 is about 33481.5688849851. The cubic root of 1121015455 is about 1038.8125793808.

Adding to 1121015455 its reverse (5545101211), we get a palindrome (6666116666).

The spelling of 1121015455 in words is "one billion, one hundred twenty-one million, fifteen thousand, four hundred fifty-five".