1111221432005 has 4 divisors (see below), whose sum is σ = 1333465718412. Its totient is φ = 888977145600.

The previous prime is 1111221431959. The next prime is 1111221432011. The reversal of 1111221432005 is 5002341221111.

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 549439702564 + 561781729441 = 741242^2 + 749521^2 .

It is not a de Polignac number, because 1111221432005 - 2⁶ = 1111221431941 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 3 ways as a sum of consecutive naturals, for example, 111122143196 + ... + 111122143205.

It is an arithmetic number, because the mean of its divisors is an integer number (333366429603).

Almost surely, 2^{1111221432005} is an apocalyptic number.

It is an amenable number.

1111221432005 is a deficient number, since it is larger than the sum of its proper divisors (222244286407).

1111221432005 is an equidigital number, since it uses as much as digits as its factorization.

1111221432005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222244286406.

The product of its (nonzero) digits is 480, while the sum is 23.

Adding to 1111221432005 its reverse (5002341221111), we get a palindrome (6113562653116).

The spelling of 1111221432005 in words is "one trillion, one hundred eleven billion, two hundred twenty-one million, four hundred thirty-two thousand, five".