2212122001122 has 160 divisors (see below), whose sum is σ = 5526133113600. Its totient is φ = 655778073600.

The previous prime is 2212122001121. The next prime is 2212122001153. The reversal of 2212122001122 is 2211002212122.

It is a happy number.

2212122001122 is a `hidden beast` number, since 221 + 212 + 200 + 11 + 22 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 2212122001095 and 2212122001104.

It is not an unprimeable number, because it can be changed into a prime (2212122001121) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 15272722 + ... + 15416882.

It is an arithmetic number, because the mean of its divisors is an integer number (34538331960).

Almost surely, 2^{2212122001122} is an apocalyptic number.

2212122001122 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 2212122001122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2763066556800).

2212122001122 is an abundant number, since it is smaller than the sum of its proper divisors (3314011112478).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2212122001122 is a wasteful number, since it uses less digits than its factorization.

2212122001122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144374 (or 144365 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 2212122001122 its reverse (2211002212122), we get a palindrome (4423124213244).

The spelling of 2212122001122 in words is "two trillion, two hundred twelve billion, one hundred twenty-two million, one thousand, one hundred twenty-two".