221000331201 has 32 divisors (see below), whose sum is σ = 334448378880. Its totient is φ = 128683080000.

The previous prime is 221000331193. The next prime is 221000331203. The reversal of 221000331201 is 102133000122.

It is not a de Polignac number, because 221000331201 - 2³ = 221000331193 is a prime.

It is a super-2 number, since 2×221000331201² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (221000331203) 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, 417076 + ... + 784826.

It is an arithmetic number, because the mean of its divisors is an integer number (10451511840).

Almost surely, 2^221000331201 is an apocalyptic number.

It is an amenable number.

221000331201 is a deficient number, since it is larger than the sum of its proper divisors (113448047679).

221000331201 is a wasteful number, since it uses less digits than its factorization.

221000331201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 368597.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 221000331201 its reverse (102133000122), we get a palindrome (323133331323).

The spelling of 221000331201 in words is "two hundred twenty-one billion, three hundred thirty-one thousand, two hundred one".