1000000220201 has 4 divisors (see below), whose sum is σ = 1000501978452. Its totient is φ = 999498461952.

The previous prime is 1000000220147. The next prime is 1000000220209. The reversal of 1000000220201 is 1020220000001.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 541232419225 + 458767800976 = 735685^2 + 677324^2 .

It is a cyclic number.

It is not a de Polignac number, because 1000000220201 - 2²⁶ = 999933111337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1000000220209) 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, 250876136 + ... + 250880121.

It is an arithmetic number, because the mean of its divisors is an integer number (250125494613).

Almost surely, 2^{1000000220201} is an apocalyptic number.

It is an amenable number.

1000000220201 is a deficient number, since it is larger than the sum of its proper divisors (501758251).

1000000220201 is an equidigital number, since it uses as much as digits as its factorization.

1000000220201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 501758250.

The product of its (nonzero) digits is 8, while the sum is 8.

Adding to 1000000220201 its reverse (1020220000001), we get a palindrome (2020220220202).

The spelling of 1000000220201 in words is "one trillion, two hundred twenty thousand, two hundred one".