220021413811 has 4 divisors (see below), whose sum is σ = 220772340432. Its totient is φ = 219270487192.

The previous prime is 220021413769. The next prime is 220021413851. The reversal of 220021413811 is 118314120022.

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 220021413811 - 2¹¹ = 220021411763 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220021413851) 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, 375462871 + ... + 375463456.

It is an arithmetic number, because the mean of its divisors is an integer number (55193085108).

Almost surely, 2^220021413811 is an apocalyptic number.

220021413811 is a deficient number, since it is larger than the sum of its proper divisors (750926621).

220021413811 is an equidigital number, since it uses as much as digits as its factorization.

220021413811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 750926620.

The product of its (nonzero) digits is 768, while the sum is 25.

Adding to 220021413811 its reverse (118314120022), we get a palindrome (338335533833).

The spelling of 220021413811 in words is "two hundred twenty billion, twenty-one million, four hundred thirteen thousand, eight hundred eleven".