220021221210011 has 12 divisors (see below), whose sum is σ = 238336829810352. Its totient is φ = 203020644262176.

The previous prime is 220021221209989. The next prime is 220021221210019. The reversal of 220021221210011 is 110012122120022.

It is a de Polignac number, because none of the positive numbers 2^k-220021221210011 is a prime.

It is not an unprimeable number, because it can be changed into a prime (220021221210019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 242711711 + ... + 243616536.

It is an arithmetic number, because the mean of its divisors is an integer number (19861402484196).

Almost surely, 2^{220021221210011} is an apocalyptic number.

220021221210011 is a deficient number, since it is larger than the sum of its proper divisors (18315608600341).

220021221210011 is a wasteful number, since it uses less digits than its factorization.

220021221210011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 486330950 (or 486330937 counting only the distinct ones).

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

Adding to 220021221210011 its reverse (110012122120022), we get a palindrome (330033343330033).

The spelling of 220021221210011 in words is "two hundred twenty trillion, twenty-one billion, two hundred twenty-one million, two hundred ten thousand, eleven".