2211020212121 has 8 divisors (see below), whose sum is σ = 2526949096320. Its totient is φ = 1895108541408.

The previous prime is 2211020212097. The next prime is 2211020212151. The reversal of 2211020212121 is 1212120201122.

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

It is a cyclic number.

It is not a de Polignac number, because 2211020212121 - 2¹⁸ = 2211019949977 is a prime.

It is a super-3 number, since 3×2211020212121³ (a number of 38 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2211020212121.

It is not an unprimeable number, because it can be changed into a prime (2211020212151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4026941 + ... + 4542938.

It is an arithmetic number, because the mean of its divisors is an integer number (315868637040).

Almost surely, 2^{2211020212121} is an apocalyptic number.

It is an amenable number.

2211020212121 is a deficient number, since it is larger than the sum of its proper divisors (315928884199).

2211020212121 is an equidigital number, since it uses as much as digits as its factorization.

2211020212121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8606743.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 2211020212121 its reverse (1212120201122), we get a palindrome (3423140413243).

The spelling of 2211020212121 in words is "two trillion, two hundred eleven billion, twenty million, two hundred twelve thousand, one hundred twenty-one".