210222020 has 12 divisors (see below), whose sum is σ = 441466284. Its totient is φ = 84088800.

The previous prime is 210222011. The next prime is 210222031. The reversal of 210222020 is 20222012.

It can be written as a sum of positive squares in 2 ways, for example, as 54671236 + 155550784 = 7394^2 + 12472^2 .

It is a junction number, because it is equal to n+sod(n) for n = 210221992 and 210222010.

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, 5255531 + ... + 5255570.

It is an arithmetic number, because the mean of its divisors is an integer number (36788857).

Almost surely, 2^210222020 is an apocalyptic number.

210222020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210222020 is an abundant number, since it is smaller than the sum of its proper divisors (231244264).

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

210222020 is a wasteful number, since it uses less digits than its factorization.

210222020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10511110 (or 10511108 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 11.

The square root of 210222020 is about 14499.0351403119. The cubic root of 210222020 is about 594.6015928567.

Adding to 210222020 its reverse (20222012), we get a palindrome (230444032).

The spelling of 210222020 in words is "two hundred ten million, two hundred twenty-two thousand, twenty".