10212021111021 has 16 divisors (see below), whose sum is σ = 13990491958080. Its totient is φ = 6622096078080.

The previous prime is 10212021111013. The next prime is 10212021111037. The reversal of 10212021111021 is 12011112021201.

It is a happy number.

It is not a de Polignac number, because 10212021111021 - 2³ = 10212021111013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10212021111091) 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, 164207406 + ... + 164269583.

It is an arithmetic number, because the mean of its divisors is an integer number (874405747380).

Almost surely, 2^{10212021111021} is an apocalyptic number.

It is an amenable number.

10212021111021 is a deficient number, since it is larger than the sum of its proper divisors (3778470847059).

10212021111021 is a wasteful number, since it uses less digits than its factorization.

10212021111021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328477276.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 10212021111021 its reverse (12011112021201), we get a palindrome (22223133132222).

The spelling of 10212021111021 in words is "ten trillion, two hundred twelve billion, twenty-one million, one hundred eleven thousand, twenty-one".