221254232189 has 8 divisors (see below), whose sum is σ = 224293513080. Its totient is φ = 218215178496.

The previous prime is 221254232131. The next prime is 221254232219. The reversal of 221254232189 is 981232452122.

It can be written as a sum of positive squares in 4 ways, for example, as 1433909689 + 219820322500 = 37867^2 + 468850^2 .

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 221254232189 - 2¹² = 221254228093 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 (221254232119) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3099107 + ... + 3169695.

It is an arithmetic number, because the mean of its divisors is an integer number (28036689135).

Almost surely, 2^221254232189 is an apocalyptic number.

It is an amenable number.

221254232189 is a deficient number, since it is larger than the sum of its proper divisors (3039280891).

221254232189 is an equidigital number, since it uses as much as digits as its factorization.

221254232189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113599.

The product of its digits is 138240, while the sum is 41.

The spelling of 221254232189 in words is "two hundred twenty-one billion, two hundred fifty-four million, two hundred thirty-two thousand, one hundred eighty-nine".