220021020112211 has 4 divisors (see below), whose sum is σ = 220136759735424. Its totient is φ = 219905280489000.

The previous prime is 220021020112181. The next prime is 220021020112247. The reversal of 220021020112211 is 112211020120022.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220021020112211 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 220021020112211.

It is not an unprimeable number, because it can be changed into a prime (220021020117211) 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, 57869808755 + ... + 57869812556.

It is an arithmetic number, because the mean of its divisors is an integer number (55034189933856).

Almost surely, 2^{220021020112211} is an apocalyptic number.

220021020112211 is a deficient number, since it is larger than the sum of its proper divisors (115739623213).

220021020112211 is a wasteful number, since it uses less digits than its factorization.

220021020112211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115739623212.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 220021020112211 its reverse (112211020120022), we get a palindrome (332232040232233).

The spelling of 220021020112211 in words is "two hundred twenty trillion, twenty-one billion, twenty million, one hundred twelve thousand, two hundred eleven".