620122212 has 72 divisors (see below), whose sum is σ = 1621751040. Its totient is φ = 199658880.

The previous prime is 620122201. The next prime is 620122219. The reversal of 620122212 is 212221026.

620122212 is a `hidden beast` number, since 620 + 1 + 22 + 21 + 2 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (620122219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 149989 + ... + 154067.

It is an arithmetic number, because the mean of its divisors is an integer number (22524320).

Almost surely, 2^620122212 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 620122212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (810875520).

620122212 is an abundant number, since it is smaller than the sum of its proper divisors (1001628828).

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

620122212 is a wasteful number, since it uses less digits than its factorization.

620122212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4233 (or 4228 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 620122212 is about 24902.2531510705. The cubic root of 620122212 is about 852.7579217464.

Adding to 620122212 its reverse (212221026), we get a palindrome (832343238).

The spelling of 620122212 in words is "six hundred twenty million, one hundred twenty-two thousand, two hundred twelve".