10020121022221 has 8 divisors (see below), whose sum is σ = 10060639827840. Its totient is φ = 9979672259568.

The previous prime is 10020121022209. The next prime is 10020121022281. The reversal of 10020121022221 is 12222012102001.

It is a happy number.

10020121022221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 10020121022221 - 2⁵ = 10020121022189 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10020121022195 and 10020121022204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10020121022281) 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, 17224041 + ... + 17796286.

It is an arithmetic number, because the mean of its divisors is an integer number (1257579978480).

Almost surely, 2^{10020121022221} is an apocalyptic number.

It is an amenable number.

10020121022221 is a deficient number, since it is larger than the sum of its proper divisors (40518805619).

10020121022221 is an equidigital number, since it uses as much as digits as its factorization.

10020121022221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35021483.

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

Adding to 10020121022221 its reverse (12222012102001), we get a palindrome (22242133124222).

The spelling of 10020121022221 in words is "ten trillion, twenty billion, one hundred twenty-one million, twenty-two thousand, two hundred twenty-one".