10211110122221 has 8 divisors (see below), whose sum is σ = 10230160089600. Its totient is φ = 10192067484048.

The previous prime is 10211110122181. The next prime is 10211110122263. The reversal of 10211110122221 is 12222101111201.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10211110122221 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 10211110122221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10211110122281) 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, 960680 + ... + 4620078.

It is an arithmetic number, because the mean of its divisors is an integer number (1278770011200).

Almost surely, 2^{10211110122221} is an apocalyptic number.

It is an amenable number.

10211110122221 is a deficient number, since it is larger than the sum of its proper divisors (19049967379).

10211110122221 is an equidigital number, since it uses as much as digits as its factorization.

10211110122221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3664603.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 10211110122221 its reverse (12222101111201), we get a palindrome (22433211233422).

The spelling of 10211110122221 in words is "ten trillion, two hundred eleven billion, one hundred ten million, one hundred twenty-two thousand, two hundred twenty-one".