111255333334421 has 4 divisors (see below), whose sum is σ = 117799764707052. Its totient is φ = 104710901961792.

The previous prime is 111255333334399. The next prime is 111255333334469. The reversal of 111255333334421 is 124433333552111.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 33631938483025 + 77623394851396 = 5799305^2 + 8810414^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111255333334421 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 (111255333334921) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3272215686290 + ... + 3272215686323.

It is an arithmetic number, because the mean of its divisors is an integer number (29449941176763).

Almost surely, 2^{111255333334421} is an apocalyptic number.

It is an amenable number.

111255333334421 is a deficient number, since it is larger than the sum of its proper divisors (6544431372631).

111255333334421 is an equidigital number, since it uses as much as digits as its factorization.

111255333334421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6544431372630.

The product of its digits is 388800, while the sum is 41.

Adding to 111255333334421 its reverse (124433333552111), we get a palindrome (235688666886532).

The spelling of 111255333334421 in words is "one hundred eleven trillion, two hundred fifty-five billion, three hundred thirty-three million, three hundred thirty-four thousand, four hundred twenty-one".