2212121011211 has 12 divisors (see below), whose sum is σ = 2270191661712. Its totient is φ = 2154767616144.

The previous prime is 2212121011157. The next prime is 2212121011213. The reversal of 2212121011211 is 1121101212122.

It is a de Polignac number, because none of the positive numbers 2^k-2212121011211 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 2212121011211.

It is not an unprimeable number, because it can be changed into a prime (2212121011213) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 56111 + ... + 2104136.

It is an arithmetic number, because the mean of its divisors is an integer number (189182638476).

Almost surely, 2^{2212121011211} is an apocalyptic number.

2212121011211 is a deficient number, since it is larger than the sum of its proper divisors (58070650501).

2212121011211 is an equidigital number, since it uses as much as digits as its factorization.

2212121011211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2160578 (or 2160439 counting only the distinct ones).

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

Adding to 2212121011211 its reverse (1121101212122), we get a palindrome (3333222223333).

The spelling of 2212121011211 in words is "two trillion, two hundred twelve billion, one hundred twenty-one million, eleven thousand, two hundred eleven".