10021210242221 has 8 divisors (see below), whose sum is σ = 10074095539200. Its totient is φ = 9968329302160.

The previous prime is 10021210242179. The next prime is 10021210242227. The reversal of 10021210242221 is 12224201212001.

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 a de Polignac number, because none of the positive numbers 2^k-10021210242221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10021210242193 and 10021210242202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10021210242227) 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, 3575615 + ... + 5729523.

It is an arithmetic number, because the mean of its divisors is an integer number (1259261942400).

Almost surely, 2^{10021210242221} is an apocalyptic number.

It is an amenable number.

10021210242221 is a deficient number, since it is larger than the sum of its proper divisors (52885296979).

10021210242221 is a wasteful number, since it uses less digits than its factorization.

10021210242221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2178459.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 10021210242221 its reverse (12224201212001), we get a palindrome (22245411454222).

The spelling of 10021210242221 in words is "ten trillion, twenty-one billion, two hundred ten million, two hundred forty-two thousand, two hundred twenty-one".