220202001 has 12 divisors (see below), whose sum is σ = 334810320. Its totient is φ = 139074840.

The previous prime is 220201991. The next prime is 220202051. The reversal of 220202001 is 100202022.

It is not a de Polignac number, because 220202001 - 2⁶ = 220201937 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (220202051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 643695 + ... + 644036.

It is an arithmetic number, because the mean of its divisors is an integer number (27900860).

Almost surely, 2^220202001 is an apocalyptic number.

It is an amenable number.

220202001 is a deficient number, since it is larger than the sum of its proper divisors (114608319).

220202001 is a wasteful number, since it uses less digits than its factorization.

220202001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1287756 (or 1287753 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

The square root of 220202001 is about 14839.2048641428. The cubic root of 220202001 is about 603.8657810693.

Adding to 220202001 its reverse (100202022), we get a palindrome (320404023).

The spelling of 220202001 in words is "two hundred twenty million, two hundred two thousand, one".