211020222 has 32 divisors (see below), whose sum is σ = 482976000. Its totient is φ = 60211008.

The previous prime is 211020163. The next prime is 211020233. The reversal of 211020222 is 222020112.

It is a junction number, because it is equal to n+sod(n) for n = 211020198 and 211020207.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33154 + ... + 39002.

It is an arithmetic number, because the mean of its divisors is an integer number (15093000).

Almost surely, 2^211020222 is an apocalyptic number.

211020222 is an abundant number, since it is smaller than the sum of its proper divisors (271955778).

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

211020222 is a wasteful number, since it uses less digits than its factorization.

211020222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6720.

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 211020222 is about 14526.5350996031. The cubic root of 211020222 is about 595.3531994233.

Adding to 211020222 its reverse (222020112), we get a palindrome (433040334).

The spelling of 211020222 in words is "two hundred eleven million, twenty thousand, two hundred twenty-two".