2212112122020 has 72 divisors (see below), whose sum is σ = 6710342740920. Its totient is φ = 589872890880.

The previous prime is 2212112122009. The next prime is 2212112122027. The reversal of 2212112122020 is 202212112122.

It is a happy number.

2212112122020 is a `hidden beast` number, since 221 + 211 + 212 + 2 + 0 + 20 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 1267934552676 + 944177569344 = 1126026^2 + 971688^2 .

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 = 2212112121984 and 2212112122002.

It is not an unprimeable number, because it can be changed into a prime (2212112122027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4504326 + ... + 4971234.

It is an arithmetic number, because the mean of its divisors is an integer number (93199204735).

Almost surely, 2^{2212112122020} is an apocalyptic number.

2212112122020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2212112122020 is an abundant number, since it is smaller than the sum of its proper divisors (4498230618900).

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

2212112122020 is a wasteful number, since it uses less digits than its factorization.

2212112122020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 493245 (or 493240 counting only the distinct ones).

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

Adding to 2212112122020 its reverse (202212112122), we get a palindrome (2414324234142).

The spelling of 2212112122020 in words is "two trillion, two hundred twelve billion, one hundred twelve million, one hundred twenty-two thousand, twenty".