220200120221021 has 4 divisors (see below), whose sum is σ = 220200207679200. Its totient is φ = 220200032762844.

The previous prime is 220200120220991. The next prime is 220200120221131. The reversal of 220200120221021 is 120122021002022.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220200120221021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220200120521021) 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, 39836951 + ... + 45026468.

It is an arithmetic number, because the mean of its divisors is an integer number (55050051919800).

Almost surely, 2^{220200120221021} is an apocalyptic number.

It is an amenable number.

220200120221021 is a deficient number, since it is larger than the sum of its proper divisors (87458179).

220200120221021 is an equidigital number, since it uses as much as digits as its factorization.

220200120221021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87458178.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 220200120221021 its reverse (120122021002022), we get a palindrome (340322141223043).

The spelling of 220200120221021 in words is "two hundred twenty trillion, two hundred billion, one hundred twenty million, two hundred twenty-one thousand, twenty-one".