220145011 has 4 divisors (see below), whose sum is σ = 222164800. Its totient is φ = 218125224.

The previous prime is 220144961. The next prime is 220145017. The reversal of 220145011 is 110541022.

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

It is a cyclic number.

It is not a de Polignac number, because 220145011 - 2¹¹ = 220142963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220145017) 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, 1009731 + ... + 1009948.

It is an arithmetic number, because the mean of its divisors is an integer number (55541200).

Almost surely, 2^220145011 is an apocalyptic number.

220145011 is a deficient number, since it is larger than the sum of its proper divisors (2019789).

220145011 is a wasteful number, since it uses less digits than its factorization.

220145011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2019788.

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 220145011 is about 14837.2844887466. The cubic root of 220145011 is about 603.8136815122.

Adding to 220145011 its reverse (110541022), we get a palindrome (330686033).

The spelling of 220145011 in words is "two hundred twenty million, one hundred forty-five thousand, eleven".