220011200201021 has 4 divisors (see below), whose sum is σ = 220011674259132. Its totient is φ = 220010726142912.

The previous prime is 220011200200907. The next prime is 220011200201081. The reversal of 220011200201021 is 120102002110022.

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

It can be written as a sum of positive squares in 2 ways, for example, as 191597918772100 + 28413281428921 = 13841890^2 + 5330411^2 .

It is a cyclic number.

It is not a de Polignac number, because 220011200201021 - 2¹⁸ = 220011199938877 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 220011200200987 and 220011200201005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220011200201081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 236332220 + ... + 237261333.

It is an arithmetic number, because the mean of its divisors is an integer number (55002918564783).

Almost surely, 2^{220011200201021} is an apocalyptic number.

It is an amenable number.

220011200201021 is a deficient number, since it is larger than the sum of its proper divisors (474058111).

220011200201021 is an equidigital number, since it uses as much as digits as its factorization.

220011200201021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 474058110.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 220011200201021 its reverse (120102002110022), we get a palindrome (340113202311043).

The spelling of 220011200201021 in words is "two hundred twenty trillion, eleven billion, two hundred million, two hundred one thousand, twenty-one".