10020021220221 has 16 divisors (see below), whose sum is σ = 13398871449600. Its totient is φ = 6660597094128.

The previous prime is 10020021220171. The next prime is 10020021220249. The reversal of 10020021220221 is 12202212002001.

It is not a de Polignac number, because 10020021220221 - 2⁷ = 10020021220093 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 10020021220221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10020021220921) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8363760 + ... + 9486438.

It is an arithmetic number, because the mean of its divisors is an integer number (837429465600).

Almost surely, 2^{10020021220221} is an apocalyptic number.

It is an amenable number.

10020021220221 is a deficient number, since it is larger than the sum of its proper divisors (3378850229379).

10020021220221 is a wasteful number, since it uses less digits than its factorization.

10020021220221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1131328.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 10020021220221 its reverse (12202212002001), we get a palindrome (22222233222222).

The spelling of 10020021220221 in words is "ten trillion, twenty billion, twenty-one million, two hundred twenty thousand, two hundred twenty-one".