10220001221 has 8 divisors (see below), whose sum is σ = 10459278720. Its totient is φ = 9980796672.

The previous prime is 10220001199. The next prime is 10220001227. The reversal of 10220001221 is 12210002201.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 10220001221 - 2¹⁴ = 10219984837 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10220001227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 352100 + ... + 380018.

It is an arithmetic number, because the mean of its divisors is an integer number (1307409840).

Almost surely, 2^10220001221 is an apocalyptic number.

It is an amenable number.

10220001221 is a deficient number, since it is larger than the sum of its proper divisors (239277499).

10220001221 is an equidigital number, since it uses as much as digits as its factorization.

10220001221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36475.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 10220001221 its reverse (12210002201), we get a palindrome (22430003422).

The spelling of 10220001221 in words is "ten billion, two hundred twenty million, one thousand, two hundred twenty-one".