220200200110021 has 4 divisors (see below), whose sum is σ = 220229416012492. Its totient is φ = 220170984207552.

The previous prime is 220200200109919. The next prime is 220200200110027. The reversal of 220200200110021 is 120011002002022.

It is a happy number.

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 132774689384100 + 87425510725921 = 11522790^2 + 9350161^2 .

It is a cyclic number.

It is not a de Polignac number, because 220200200110021 - 2²¹ = 220200198012869 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 220200200109983 and 220200200110010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220200200110027) 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, 14607939930 + ... + 14607955003.

It is an arithmetic number, because the mean of its divisors is an integer number (55057354003123).

Almost surely, 2^{220200200110021} is an apocalyptic number.

It is an amenable number.

220200200110021 is a deficient number, since it is larger than the sum of its proper divisors (29215902471).

220200200110021 is an equidigital number, since it uses as much as digits as its factorization.

220200200110021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29215902470.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 220200200110021 its reverse (120011002002022), we get a palindrome (340211202112043).

The spelling of 220200200110021 in words is "two hundred twenty trillion, two hundred billion, two hundred million, one hundred ten thousand, twenty-one".