221021022201 has 32 divisors (see below), whose sum is σ = 357961943040. Its totient is φ = 118488801024.

The previous prime is 221021022193. The next prime is 221021022241. The reversal of 221021022201 is 102220120122.

It is not a de Polignac number, because 221021022201 - 2³ = 221021022193 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (221021022241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2647920 + ... + 2730113.

It is an arithmetic number, because the mean of its divisors is an integer number (11186310720).

Almost surely, 2^221021022201 is an apocalyptic number.

221021022201 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

221021022201 is a deficient number, since it is larger than the sum of its proper divisors (136940920839).

221021022201 is a wasteful number, since it uses less digits than its factorization.

221021022201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5378165.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 221021022201 its reverse (102220120122), we get a palindrome (323241142323).

The spelling of 221021022201 in words is "two hundred twenty-one billion, twenty-one million, twenty-two thousand, two hundred one".