10212220001221 has 8 divisors (see below), whose sum is σ = 11786664104064. Its totient is φ = 8666664781200.

The previous prime is 10212220001219. The next prime is 10212220001299. The reversal of 10212220001221 is 12210002221201.

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 10212220001221 - 2¹ = 10212220001219 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10212220001195 and 10212220001204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10212220061221) 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, 7222219945 + ... + 7222221358.

It is an arithmetic number, because the mean of its divisors is an integer number (1473333013008).

Almost surely, 2^{10212220001221} is an apocalyptic number.

It is an amenable number.

10212220001221 is a deficient number, since it is larger than the sum of its proper divisors (1574444102843).

10212220001221 is a wasteful number, since it uses less digits than its factorization.

10212220001221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14444441411.

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

Adding to 10212220001221 its reverse (12210002221201), we get a palindrome (22422222222422).

The spelling of 10212220001221 in words is "ten trillion, two hundred twelve billion, two hundred twenty million, one thousand, two hundred twenty-one".