221050524130121 has 24 divisors (see below), whose sum is σ = 257812916221440. Its totient is φ = 188976501185472.

The previous prime is 221050524130069. The next prime is 221050524130123. The reversal of 221050524130121 is 121031425050122.

It is not a de Polignac number, because 221050524130121 - 2⁶ = 221050524130057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221050524130123) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 117367760 + ... + 119236286.

It is an arithmetic number, because the mean of its divisors is an integer number (10742204842560).

Almost surely, 2^{221050524130121} is an apocalyptic number.

It is an amenable number.

221050524130121 is a deficient number, since it is larger than the sum of its proper divisors (36762392091319).

221050524130121 is a wasteful number, since it uses less digits than its factorization.

221050524130121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1874853 (or 1874846 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 29.

Adding to 221050524130121 its reverse (121031425050122), we get a palindrome (342081949180243).

The spelling of 221050524130121 in words is "two hundred twenty-one trillion, fifty billion, five hundred twenty-four million, one hundred thirty thousand, one hundred twenty-one".