221220200201 has 32 divisors (see below), whose sum is σ = 314494887168.
Its totient is φ = 149759447040.
The previous prime is 221220200171. The next prime is 221220200233. The reversal of 221220200201 is 102002022122.
Adding to 221220200201 its reverse (102002022122), we get a palindrome (323222222323).
It is not a de Polignac number, because 221220200201 - 26 = 221220200137 is a prime.
It is not an unprimeable number, because it can be changed into a prime (221220200291) by changing a digit.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6482960 + ... + 6516993.
It is an arithmetic number, because the mean of its divisors is an integer number (9827965224).
Almost surely, 2221220200201 is an apocalyptic number.
It is an amenable number.
221220200201 is a deficient number, since it is larger than the sum of its proper divisors (93274686967).
221220200201 is a wasteful number, since it uses less digits than its factorization.
221220200201 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 13000001.
The product of its (nonzero) digits is 64, while the sum is 14.
The spelling of 221220200201 in words is "two hundred twenty-one billion, two hundred twenty million, two hundred thousand, two hundred one".