220012310221 has 4 divisors (see below), whose sum is σ = 240013429344. Its totient is φ = 200011191100.

The previous prime is 220012310173. The next prime is 220012310227. The reversal of 220012310221 is 122013210022.

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 not a de Polignac number, because 220012310221 - 2²⁷ = 219878092493 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 220012310195 and 220012310204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220012310227) 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, 10000559545 + ... + 10000559566.

It is an arithmetic number, because the mean of its divisors is an integer number (60003357336).

Almost surely, 2^220012310221 is an apocalyptic number.

It is an amenable number.

220012310221 is a deficient number, since it is larger than the sum of its proper divisors (20001119123).

220012310221 is a wasteful number, since it uses less digits than its factorization.

220012310221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20001119122.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 220012310221 its reverse (122013210022), we get a palindrome (342025520243).

The spelling of 220012310221 in words is "two hundred twenty billion, twelve million, three hundred ten thousand, two hundred twenty-one".