221489965370 has 16 divisors (see below), whose sum is σ = 398690359848. Its totient is φ = 88594114560.

The previous prime is 221489965369. The next prime is 221489965409. The reversal of 221489965370 is 73569984122.

221489965370 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 152653522681 + 68836442689 = 390709^2 + 262367^2 .

It is an unprimeable number.

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, 327182 + ... + 741638.

It is a 1-persistent number, because it is pandigital, but 2⋅221489965370 = 442979930740 is not.

Almost surely, 2^221489965370 is an apocalyptic number.

221489965370 is a deficient number, since it is larger than the sum of its proper divisors (177200394478).

221489965370 is a wasteful number, since it uses less digits than its factorization.

221489965370 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 467905.

The product of its (nonzero) digits is 6531840, while the sum is 56.

The spelling of 221489965370 in words is "two hundred twenty-one billion, four hundred eighty-nine million, nine hundred sixty-five thousand, three hundred seventy".