10211221002221 has 8 divisors (see below), whose sum is σ = 10212866640000. Its totient is φ = 10209575515680.

The previous prime is 10211221002217. The next prime is 10211221002233. The reversal of 10211221002221 is 12220012211201.

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 10211221002221 - 2² = 10211221002217 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 10211221002221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10211221082221) 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, 239403305 + ... + 239445953.

It is an arithmetic number, because the mean of its divisors is an integer number (1276608330000).

Almost surely, 2^{10211221002221} is an apocalyptic number.

It is an amenable number.

10211221002221 is a deficient number, since it is larger than the sum of its proper divisors (1645637779).

10211221002221 is a wasteful number, since it uses less digits than its factorization.

10211221002221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75619.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 10211221002221 its reverse (12220012211201), we get a palindrome (22431233213422).

The spelling of 10211221002221 in words is "ten trillion, two hundred eleven billion, two hundred twenty-one million, two thousand, two hundred twenty-one".