2212011211121 has 8 divisors (see below), whose sum is σ = 2213353872744. Its totient is φ = 2210668957440.

The previous prime is 2212011211099. The next prime is 2212011211133. The reversal of 2212011211121 is 1211121102122.

It can be written as a sum of positive squares in 4 ways, for example, as 79053194896 + 2132958016225 = 281164^2 + 1460465^2 .

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 2212011211121 - 2²⁶ = 2211944102257 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 2212011211121.

It is not an unprimeable number, because it can be changed into a prime (2212011211171) 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, 11117291 + ... + 11314511.

It is an arithmetic number, because the mean of its divisors is an integer number (276669234093).

Almost surely, 2^{2212011211121} is an apocalyptic number.

It is an amenable number.

2212011211121 is a deficient number, since it is larger than the sum of its proper divisors (1342661623).

2212011211121 is a wasteful number, since it uses less digits than its factorization.

2212011211121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203971.

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

Adding to 2212011211121 its reverse (1211121102122), we get a palindrome (3423132313243).

The spelling of 2212011211121 in words is "two trillion, two hundred twelve billion, eleven million, two hundred eleven thousand, one hundred twenty-one".