221103553439 has 4 divisors (see below), whose sum is σ = 221120152440. Its totient is φ = 221086954440.

The previous prime is 221103553399. The next prime is 221103553453. The reversal of 221103553439 is 934355301122.

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

It is a cyclic number.

It is not a de Polignac number, because 221103553439 - 2⁸ = 221103553183 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 (221103553499) 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, 8279504 + ... + 8306165.

It is an arithmetic number, because the mean of its divisors is an integer number (55280038110).

Almost surely, 2^221103553439 is an apocalyptic number.

221103553439 is a deficient number, since it is larger than the sum of its proper divisors (16599001).

221103553439 is a wasteful number, since it uses less digits than its factorization.

221103553439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16599000.

The product of its (nonzero) digits is 97200, while the sum is 38.

The spelling of 221103553439 in words is "two hundred twenty-one billion, one hundred three million, five hundred fifty-three thousand, four hundred thirty-nine".