221034201 has 16 divisors (see below), whose sum is σ = 320923200. Its totient is φ = 134785728.

The previous prime is 221034137. The next prime is 221034211. The reversal of 221034201 is 102430122.

It is not a de Polignac number, because 221034201 - 2⁶ = 221034137 is a prime.

It is a super-2 number, since 2×221034201² = 97712236023416802, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (221034211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 65206 + ... + 68511.

It is an arithmetic number, because the mean of its divisors is an integer number (20057700).

Almost surely, 2^221034201 is an apocalyptic number.

It is an amenable number.

221034201 is a deficient number, since it is larger than the sum of its proper divisors (99888999).

221034201 is a wasteful number, since it uses less digits than its factorization.

221034201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133768.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 221034201 is about 14867.2190069293. The cubic root of 221034201 is about 604.6255461248.

Adding to 221034201 its reverse (102430122), we get a palindrome (323464323).

The spelling of 221034201 in words is "two hundred twenty-one million, thirty-four thousand, two hundred one".