2021101210221 has 8 divisors (see below), whose sum is σ = 2767634089824. Its totient is φ = 1310984568720.

The previous prime is 2021101210201. The next prime is 2021101210267. The reversal of 2021101210221 is 1220121011202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2021101210221 - 2⁵ = 2021101210189 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2021101210221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021101210201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9104059395 + ... + 9104059616.

It is an arithmetic number, because the mean of its divisors is an integer number (345954261228).

Almost surely, 2^{2021101210221} is an apocalyptic number.

It is an amenable number.

2021101210221 is a deficient number, since it is larger than the sum of its proper divisors (746532879603).

2021101210221 is a wasteful number, since it uses less digits than its factorization.

2021101210221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18208119051.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 2021101210221 its reverse (1220121011202), we get a palindrome (3241222221423).

It can be divided in two parts, 2021101 and 210221, that added together give a palindrome (2231322).

The spelling of 2021101210221 in words is "two trillion, twenty-one billion, one hundred one million, two hundred ten thousand, two hundred twenty-one".