10020101221 has 8 divisors (see below), whose sum is σ = 11020472064. Its totient is φ = 9052529520.

The previous prime is 10020101207. The next prime is 10020101227. The reversal of 10020101221 is 12210102001.

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 10020101221 - 2¹⁵ = 10020068453 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10020101198 and 10020101207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10020101227) 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, 8199145 + ... + 8200366.

It is an arithmetic number, because the mean of its divisors is an integer number (1377559008).

Almost surely, 2^10020101221 is an apocalyptic number.

It is an amenable number.

10020101221 is a deficient number, since it is larger than the sum of its proper divisors (1000370843).

10020101221 is a wasteful number, since it uses less digits than its factorization.

10020101221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16399571.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 10020101221 its reverse (12210102001), we get a palindrome (22230203222).

The spelling of 10020101221 in words is "ten billion, twenty million, one hundred one thousand, two hundred twenty-one".