221288883091 has 8 divisors (see below), whose sum is σ = 234430740000. Its totient is φ = 208160899968.

The previous prime is 221288883083. The next prime is 221288883113. The reversal of 221288883091 is 190388882122.

221288883091 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 221288883091 - 2³ = 221288883083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221288883041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3435591 + ... + 3499408.

It is an arithmetic number, because the mean of its divisors is an integer number (29303842500).

Almost surely, 2^221288883091 is an apocalyptic number.

221288883091 is a deficient number, since it is larger than the sum of its proper divisors (13141856909).

221288883091 is a wasteful number, since it uses less digits than its factorization.

221288883091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6936893.

The product of its (nonzero) digits is 884736, while the sum is 52.

The spelling of 221288883091 in words is "two hundred twenty-one billion, two hundred eighty-eight million, eight hundred eighty-three thousand, ninety-one".