220232001 has 32 divisors (see below), whose sum is σ = 327172608. Its totient is φ = 130659840.

The previous prime is 220231997. The next prime is 220232009. The reversal of 220232001 is 100232022.

It is not a de Polignac number, because 220232001 - 2² = 220231997 is a prime.

It is not an unprimeable number, because it can be changed into a prime (220232009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 342186 + ... + 342828.

It is an arithmetic number, because the mean of its divisors is an integer number (10224144).

Almost surely, 2^220232001 is an apocalyptic number.

It is an amenable number.

220232001 is a deficient number, since it is larger than the sum of its proper divisors (106940607).

220232001 is a wasteful number, since it uses less digits than its factorization.

220232001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 861.

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 220232001 is about 14840.2156655488. The cubic root of 220232001 is about 603.8932030890.

Adding to 220232001 its reverse (100232022), we get a palindrome (320464023).

It can be divided in two parts, 220 and 232001, that added together give a triangular number (232221 = T₆₈₁).

The spelling of 220232001 in words is "two hundred twenty million, two hundred thirty-two thousand, one".