10020202101221 has 96 divisors (see below), whose sum is σ = 12299019264000. Its totient is φ = 8088821664768.

The previous prime is 10020202101197. The next prime is 10020202101227. The reversal of 10020202101221 is 12210120202001.

It is a de Polignac number, because none of the positive numbers 2^k-10020202101221 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 10020202101196 and 10020202101205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10020202101227) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2017352480 + ... + 2017357446.

It is an arithmetic number, because the mean of its divisors is an integer number (128114784000).

Almost surely, 2^{10020202101221} is an apocalyptic number.

It is an amenable number.

10020202101221 is a deficient number, since it is larger than the sum of its proper divisors (2278817162779).

10020202101221 is a wasteful number, since it uses less digits than its factorization.

10020202101221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5571 (or 5554 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 10020202101221 its reverse (12210120202001), we get a palindrome (22230322303222).

The spelling of 10020202101221 in words is "ten trillion, twenty billion, two hundred two million, one hundred one thousand, two hundred twenty-one".