2021305122 has 48 divisors (see below), whose sum is σ = 4437538560. Its totient is φ = 664884000.

The previous prime is 2021305087. The next prime is 2021305123. The reversal of 2021305122 is 2215031202.

2021305122 is a `hidden beast` number, since 20 + 2 + 130 + 512 + 2 = 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 = 2021305095 and 2021305104.

It is not an unprimeable number, because it can be changed into a prime (2021305123) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 600079 + ... + 603437.

It is an arithmetic number, because the mean of its divisors is an integer number (92448720).

Almost surely, 2^2021305122 is an apocalyptic number.

2021305122 is an abundant number, since it is smaller than the sum of its proper divisors (2416233438).

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

2021305122 is a wasteful number, since it uses less digits than its factorization.

2021305122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3799 (or 3796 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 2021305122 is about 44958.9270557027. The cubic root of 2021305122 is about 1264.3790527333.

Adding to 2021305122 its reverse (2215031202), we get a palindrome (4236336324).

The spelling of 2021305122 in words is "two billion, twenty-one million, three hundred five thousand, one hundred twenty-two".