1111221431455 has 8 divisors (see below), whose sum is σ = 1379447294400. Its totient is φ = 858322760736.

The previous prime is 1111221431399. The next prime is 1111221431471. The reversal of 1111221431455 is 5541341221111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1111221431455 - 2¹¹ = 1111221429407 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3831797895 + ... + 3831798184.

It is an arithmetic number, because the mean of its divisors is an integer number (172430911800).

Almost surely, 2^{1111221431455} is an apocalyptic number.

1111221431455 is a deficient number, since it is larger than the sum of its proper divisors (268225862945).

1111221431455 is an equidigital number, since it uses as much as digits as its factorization.

1111221431455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7663596113.

The product of its digits is 4800, while the sum is 31.

Adding to 1111221431455 its reverse (5541341221111), we get a palindrome (6652562652566).

The spelling of 1111221431455 in words is "one trillion, one hundred eleven billion, two hundred twenty-one million, four hundred thirty-one thousand, four hundred fifty-five".