221525161043050 has 24 divisors (see below), whose sum is σ = 413064322768332. Its totient is φ = 88389091680000.

The previous prime is 221525161043041. The next prime is 221525161043107. The reversal of 221525161043050 is 50340161525122.

It can be written as a sum of positive squares in 6 ways, for example, as 106617416476041 + 114907744567009 = 10325571^2 + 10719503^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5524298181 + ... + 5524338280.

Almost surely, 2^{221525161043050} is an apocalyptic number.

221525161043050 is a deficient number, since it is larger than the sum of its proper divisors (191539161725282).

221525161043050 is a wasteful number, since it uses less digits than its factorization.

221525161043050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11048636874 (or 11048636869 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 37.

The spelling of 221525161043050 in words is "two hundred twenty-one trillion, five hundred twenty-five billion, one hundred sixty-one million, forty-three thousand, fifty".