2021210122101 has 16 divisors (see below), whose sum is σ = 2753752806144. Its totient is φ = 1318100982464.

The previous prime is 2021210122093. The next prime is 2021210122117. The reversal of 2021210122101 is 1012210121202.

It is a cyclic number.

It is not a de Polignac number, because 2021210122101 - 2³ = 2021210122093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021210122181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3553890 + ... + 4083203.

It is an arithmetic number, because the mean of its divisors is an integer number (172109550384).

Almost surely, 2^{2021210122101} is an apocalyptic number.

It is an amenable number.

2021210122101 is a deficient number, since it is larger than the sum of its proper divisors (732542684043).

2021210122101 is a wasteful number, since it uses less digits than its factorization.

2021210122101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7639020.

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

Adding to 2021210122101 its reverse (1012210121202), we get a palindrome (3033420243303).

The spelling of 2021210122101 in words is "two trillion, twenty-one billion, two hundred ten million, one hundred twenty-two thousand, one hundred one".