220010001 has 4 divisors (see below), whose sum is σ = 293346672. Its totient is φ = 146673332.

The previous prime is 220009963. The next prime is 220010033. The reversal of 220010001 is 100010022.

It is a happy number.

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.

It is a cyclic number.

It is not a de Polignac number, because 220010001 - 2¹⁰ = 220008977 is a prime.

It is not an unprimeable number, because it can be changed into a prime (220010041) 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, 36668331 + ... + 36668336.

It is an arithmetic number, because the mean of its divisors is an integer number (73336668).

Almost surely, 2^220010001 is an apocalyptic number.

It is an amenable number.

220010001 is a deficient number, since it is larger than the sum of its proper divisors (73336671).

220010001 is an equidigital number, since it uses as much as digits as its factorization.

220010001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73336670.

The product of its (nonzero) digits is 4, while the sum is 6.

The square root of 220010001 is about 14832.7341040012. The cubic root of 220010001 is about 603.6902211388.

Adding to 220010001 its reverse (100010022), we get a palindrome (320020023).

The spelling of 220010001 in words is "two hundred twenty million, ten thousand, one".