10010121022221 has 4 divisors (see below), whose sum is σ = 13346828029632. Its totient is φ = 6673414014812.

The previous prime is 10010121022193. The next prime is 10010121022261. The reversal of 10010121022221 is 12222012101001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 10010121022221 - 2⁵ = 10010121022189 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 10010121022221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10010121022261) 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, 1668353503701 + ... + 1668353503706.

It is an arithmetic number, because the mean of its divisors is an integer number (3336707007408).

Almost surely, 2^{10010121022221} is an apocalyptic number.

It is an amenable number.

10010121022221 is a deficient number, since it is larger than the sum of its proper divisors (3336707007411).

10010121022221 is an equidigital number, since it uses as much as digits as its factorization.

10010121022221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3336707007410.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 10010121022221 its reverse (12222012101001), we get a palindrome (22232133123222).

The spelling of 10010121022221 in words is "ten trillion, ten billion, one hundred twenty-one million, twenty-two thousand, two hundred twenty-one".