2212212111021 has 12 divisors (see below), whose sum is σ = 3485909993280. Its totient is φ = 1340734612680.

The previous prime is 2212212111001. The next prime is 2212212111059. The reversal of 2212212111021 is 1201112122122.

2212212111021 is a `hidden beast` number, since 221 + 221 + 211 + 10 + 2 + 1 = 666.

It is not a de Polignac number, because 2212212111021 - 2¹⁰ = 2212212109997 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2212212110985 and 2212212111003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2212212111001) 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, 11172788341 + ... + 11172788538.

It is an arithmetic number, because the mean of its divisors is an integer number (290492499440).

Almost surely, 2^{2212212111021} is an apocalyptic number.

It is an amenable number.

2212212111021 is a deficient number, since it is larger than the sum of its proper divisors (1273697882259).

2212212111021 is a wasteful number, since it uses less digits than its factorization.

2212212111021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22345576896 (or 22345576893 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 2212212111021 its reverse (1201112122122), we get a palindrome (3413324233143).

The spelling of 2212212111021 in words is "two trillion, two hundred twelve billion, two hundred twelve million, one hundred eleven thousand, twenty-one".