2021110211121 has 8 divisors (see below), whose sum is σ = 2697555036480. Its totient is φ = 1346036096592.

The previous prime is 2021110211101. The next prime is 2021110211143. The reversal of 2021110211121 is 1211120111202.

It is a happy number.

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

It is not a de Polignac number, because 2021110211121 - 2⁷ = 2021110210993 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2021110211121.

It is not an unprimeable number, because it can be changed into a prime (2021110211101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 342674266 + ... + 342680163.

It is an arithmetic number, because the mean of its divisors is an integer number (337194379560).

Almost surely, 2^{2021110211121} is an apocalyptic number.

It is an amenable number.

2021110211121 is a deficient number, since it is larger than the sum of its proper divisors (676444825359).

2021110211121 is an equidigital number, since it uses as much as digits as its factorization.

2021110211121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 685355415.

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

Adding to 2021110211121 its reverse (1211120111202), we get a palindrome (3232230322323).

The spelling of 2021110211121 in words is "two trillion, twenty-one billion, one hundred ten million, two hundred eleven thousand, one hundred twenty-one".