2212242422121 has 20 divisors (see below), whose sum is σ = 3394024247812. Its totient is φ = 1434968055648.

The previous prime is 2212242422119. The next prime is 2212242422147. The reversal of 2212242422121 is 1212242422122.

2212242422121 is a `hidden beast` number, since 2 + 2 + 1 + 22 + 424 + 2 + 212 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1896847862121 + 315394560000 = 1377261^2 + 561600^2 .

It is not a de Polignac number, because 2212242422121 - 2¹ = 2212242422119 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2212242422191) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 369073150 + ... + 369079143.

Almost surely, 2^{2212242422121} is an apocalyptic number.

It is an amenable number.

2212242422121 is a deficient number, since it is larger than the sum of its proper divisors (1181781825691).

2212242422121 is an equidigital number, since it uses as much as digits as its factorization.

2212242422121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 738152342 (or 738152333 counting only the distinct ones).

The product of its digits is 4096, while the sum is 27.

Adding to 2212242422121 its reverse (1212242422122), we get a palindrome (3424484844243).

Subtracting from 2212242422121 its reverse (1212242422122), we obtain a palindrome (999999999999).

The spelling of 2212242422121 in words is "two trillion, two hundred twelve billion, two hundred forty-two million, four hundred twenty-two thousand, one hundred twenty-one".