4220212 has 12 divisors (see below), whose sum is σ = 7565796. Its totient is φ = 2058560.

The previous prime is 4220207. The next prime is 4220239. The reversal of 4220212 is 2120224.

It can be written as a sum of positive squares in 2 ways, for example, as 236196 + 3984016 = 486^2 + 1996^2 .

It is a junction number, because it is equal to n+sod(n) for n = 4220192 and 4220201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12703 + ... + 13030.

It is an arithmetic number, because the mean of its divisors is an integer number (630483).

Almost surely, 2^4220212 is an apocalyptic number.

It is an amenable number.

4220212 is a deficient number, since it is larger than the sum of its proper divisors (3345584).

4220212 is a wasteful number, since it uses less digits than its factorization.

4220212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25778 (or 25776 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 13.

The square root of 4220212 is about 2054.3154577620. The cubic root of 4220212 is about 161.6012649805.

Adding to 4220212 its reverse (2120224), we get a palindrome (6340436).

The spelling of 4220212 in words is "four million, two hundred twenty thousand, two hundred twelve".