221240020168570 has 16 divisors (see below), whose sum is σ = 428865269865480. Its totient is φ = 81688622831424.

The previous prime is 221240020168547. The next prime is 221240020168577. The reversal of 221240020168570 is 75861020042122.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 98072795855241 + 123167224313329 = 9903171^2 + 11098073^2 .

It is not an unprimeable number, because it can be changed into a prime (221240020168577) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 850923154365 + ... + 850923154624.

Almost surely, 2^{221240020168570} is an apocalyptic number.

221240020168570 is a deficient number, since it is larger than the sum of its proper divisors (207625249696910).

221240020168570 is a wasteful number, since it uses less digits than its factorization.

221240020168570 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1701846309009.

The product of its (nonzero) digits is 107520, while the sum is 40.

The spelling of 221240020168570 in words is "two hundred twenty-one trillion, two hundred forty billion, twenty million, one hundred sixty-eight thousand, five hundred seventy".