2013220001 has 4 divisors (see below), whose sum is σ = 2168083092. Its totient is φ = 1858356912.

The previous prime is 2013219977. The next prime is 2013220003. The reversal of 2013220001 is 1000223102.

It is a happy number.

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 94867600 + 1918352401 = 9740^2 + 43799^2 .

It is a cyclic number.

It is not a de Polignac number, because 2013220001 - 2¹⁸ = 2012957857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2013220003) 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, 77431526 + ... + 77431551.

It is an arithmetic number, because the mean of its divisors is an integer number (542020773).

Almost surely, 2^2013220001 is an apocalyptic number.

It is an amenable number.

2013220001 is a deficient number, since it is larger than the sum of its proper divisors (154863091).

2013220001 is a wasteful number, since it uses less digits than its factorization.

2013220001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154863090.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 2013220001 is about 44868.9202121023. The cubic root of 2013220001 is about 1262.6909820025.

Adding to 2013220001 its reverse (1000223102), we get a palindrome (3013443103).

The spelling of 2013220001 in words is "two billion, thirteen million, two hundred twenty thousand, one".