2021210212101 has 16 divisors (see below), whose sum is σ = 2739271788480. Its totient is φ = 1325313400320.

The previous prime is 2021210212039. The next prime is 2021210212121. The reversal of 2021210212101 is 1012120121202.

It is not a de Polignac number, because 2021210212101 - 2¹⁰ = 2021210211077 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021210212121) 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, 3283126 + ... + 3849848.

It is an arithmetic number, because the mean of its divisors is an integer number (171204486780).

Almost surely, 2^{2021210212101} is an apocalyptic number.

It is an amenable number.

2021210212101 is a deficient number, since it is larger than the sum of its proper divisors (718061576379).

2021210212101 is a wasteful number, since it uses less digits than its factorization.

2021210212101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 586276.

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

Adding to 2021210212101 its reverse (1012120121202), we get a palindrome (3033330333303).

The spelling of 2021210212101 in words is "two trillion, twenty-one billion, two hundred ten million, two hundred twelve thousand, one hundred one".