220211120220021 has 12 divisors (see below), whose sum is σ = 363523119093472. Its totient is φ = 125834925839976.

The previous prime is 220211120220017. The next prime is 220211120220023. The reversal of 220211120220021 is 120022021112022.

It is a happy number.

220211120220021 is a `hidden beast` number, since 220 + 21 + 1 + 1 + 202 + 200 + 21 = 666.

It is not a de Polignac number, because 220211120220021 - 2² = 220211120220017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 220211120219976 and 220211120220003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220211120220023) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1747707303271 + ... + 1747707303396.

Almost surely, 2^{220211120220021} is an apocalyptic number.

220211120220021 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

220211120220021 is a deficient number, since it is larger than the sum of its proper divisors (143311998873451).

220211120220021 is a wasteful number, since it uses less digits than its factorization.

220211120220021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3495414606680 (or 3495414606677 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 220211120220021 its reverse (120022021112022), we get a palindrome (340233141332043).

The spelling of 220211120220021 in words is "two hundred twenty trillion, two hundred eleven billion, one hundred twenty million, two hundred twenty thousand, twenty-one".