2211211201121 has 8 divisors (see below), whose sum is σ = 2382299516520. Its totient is φ = 2040265049472.

The previous prime is 2211211201099. The next prime is 2211211201123. The reversal of 2211211201121 is 1211021121122.

It can be written as a sum of positive squares in 4 ways, for example, as 231491850496 + 1979719350625 = 481136^2 + 1407025^2 .

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

It is not a de Polignac number, because 2211211201121 - 2¹⁰ = 2211211200097 is a prime.

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 2211211201121.

It is not an unprimeable number, because it can be changed into a prime (2211211201123) 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, 35508626 + ... + 35570843.

It is an arithmetic number, because the mean of its divisors is an integer number (297787439565).

Almost surely, 2^{2211211201121} is an apocalyptic number.

It is an amenable number.

2211211201121 is a deficient number, since it is larger than the sum of its proper divisors (171088315399).

2211211201121 is a wasteful number, since it uses less digits than its factorization.

2211211201121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71081875.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 2211211201121 its reverse (1211021121122), we get a palindrome (3422232322243).

The spelling of 2211211201121 in words is "two trillion, two hundred eleven billion, two hundred eleven million, two hundred one thousand, one hundred twenty-one".