1111121434455 has 32 divisors (see below), whose sum is σ = 1855164225024. Its totient is φ = 566810192256.

The previous prime is 1111121434447. The next prime is 1111121434459. The reversal of 1111121434455 is 5544341211111.

It is not a de Polignac number, because 1111121434455 - 2³ = 1111121434447 is a prime.

It is a super-2 number, since 2×1111121434455² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111121434459) 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, 11556892 + ... + 11652638.

It is an arithmetic number, because the mean of its divisors is an integer number (57973882032).

Almost surely, 2^{1111121434455} is an apocalyptic number.

1111121434455 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1111121434455 is a deficient number, since it is larger than the sum of its proper divisors (744042790569).

1111121434455 is a wasteful number, since it uses less digits than its factorization.

1111121434455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129415.

The product of its digits is 9600, while the sum is 33.

Adding to 1111121434455 its reverse (5544341211111), we get a palindrome (6655462645566).

The spelling of 1111121434455 in words is "one trillion, one hundred eleven billion, one hundred twenty-one million, four hundred thirty-four thousand, four hundred fifty-five".