10020213021221 has 24 divisors (see below), whose sum is σ = 10989070182720. Its totient is φ = 9131286343296.

The previous prime is 10020213021163. The next prime is 10020213021241. The reversal of 10020213021221 is 12212031202001.

It is not a de Polignac number, because 10020213021221 - 2³⁴ = 10003033152037 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 10020213021221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10020213021241) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18913625 + ... + 19436193.

It is an arithmetic number, because the mean of its divisors is an integer number (457877924280).

Almost surely, 2^{10020213021221} is an apocalyptic number.

It is an amenable number.

10020213021221 is a deficient number, since it is larger than the sum of its proper divisors (968857161499).

10020213021221 is a wasteful number, since it uses less digits than its factorization.

10020213021221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 524045 (or 524032 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 10020213021221 its reverse (12212031202001), we get a palindrome (22232244223222).

The spelling of 10020213021221 in words is "ten trillion, twenty billion, two hundred thirteen million, twenty-one thousand, two hundred twenty-one".