10220100212221 has 4 divisors (see below), whose sum is σ = 10225851536572. Its totient is φ = 10214348887872.

The previous prime is 10220100212183. The next prime is 10220100212227. The reversal of 10220100212221 is 12221200102201.

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 5164847116900 + 5055253095321 = 2272630^2 + 2248389^2 .

It is a cyclic number.

It is not a de Polignac number, because 10220100212221 - 2¹³ = 10220100204029 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10220100212195 and 10220100212204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10220100212227) 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, 2875659510 + ... + 2875663063.

It is an arithmetic number, because the mean of its divisors is an integer number (2556462884143).

Almost surely, 2^{10220100212221} is an apocalyptic number.

It is an amenable number.

10220100212221 is a deficient number, since it is larger than the sum of its proper divisors (5751324351).

10220100212221 is an equidigital number, since it uses as much as digits as its factorization.

10220100212221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5751324350.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 10220100212221 its reverse (12221200102201), we get a palindrome (22441300314422).

The spelling of 10220100212221 in words is "ten trillion, two hundred twenty billion, one hundred million, two hundred twelve thousand, two hundred twenty-one".