220312201 has 4 divisors (see below), whose sum is σ = 231907600. Its totient is φ = 208716804.

The previous prime is 220312187. The next prime is 220312237. The reversal of 220312201 is 102213022.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 102213022 = 2 ⋅51106511.

It is a cyclic number.

It is not a de Polignac number, because 220312201 - 2¹⁹ = 219787913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220312241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5797671 + ... + 5797708.

It is an arithmetic number, because the mean of its divisors is an integer number (57976900).

Almost surely, 2^220312201 is an apocalyptic number.

It is an amenable number.

220312201 is a deficient number, since it is larger than the sum of its proper divisors (11595399).

220312201 is a wasteful number, since it uses less digits than its factorization.

220312201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11595398.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 220312201 is about 14842.9175366570. The cubic root of 220312201 is about 603.9664990629.

Adding to 220312201 its reverse (102213022), we get a palindrome (322525223).

The spelling of 220312201 in words is "two hundred twenty million, three hundred twelve thousand, two hundred one".