2021120122101 has 4 divisors (see below), whose sum is σ = 2694826829472. Its totient is φ = 1347413414732.

The previous prime is 2021120122081. The next prime is 2021120122139. The reversal of 2021120122101 is 1012210211202.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2021120122101 - 2⁶ = 2021120122037 is a prime.

It is a super-2 number, since 2×2021120122101² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021120122001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 336853353681 + ... + 336853353686.

It is an arithmetic number, because the mean of its divisors is an integer number (673706707368).

Almost surely, 2^{2021120122101} is an apocalyptic number.

It is an amenable number.

2021120122101 is a deficient number, since it is larger than the sum of its proper divisors (673706707371).

2021120122101 is an equidigital number, since it uses as much as digits as its factorization.

2021120122101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 673706707370.

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

Adding to 2021120122101 its reverse (1012210211202), we get a palindrome (3033330333303).

The spelling of 2021120122101 in words is "two trillion, twenty-one billion, one hundred twenty million, one hundred twenty-two thousand, one hundred one".