2218545011 has 4 divisors (see below), whose sum is σ = 2219376432. Its totient is φ = 2217713592.

The previous prime is 2218544987. The next prime is 2218545031. The reversal of 2218545011 is 1105458122.

2218545011 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1105458122 = 2 ⋅552729061.

It is a cyclic number.

It is not a de Polignac number, because 2218545011 - 2⁶ = 2218544947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2218545031) 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, 411695 + ... + 417048.

It is an arithmetic number, because the mean of its divisors is an integer number (554844108).

Almost surely, 2^2218545011 is an apocalyptic number.

2218545011 is a deficient number, since it is larger than the sum of its proper divisors (831421).

2218545011 is an equidigital number, since it uses as much as digits as its factorization.

2218545011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 831420.

The product of its (nonzero) digits is 3200, while the sum is 29.

The square root of 2218545011 is about 47101.4332159861. The cubic root of 2218545011 is about 1304.2356932402.

The spelling of 2218545011 in words is "two billion, two hundred eighteen million, five hundred forty-five thousand, eleven".