211222010 has 8 divisors (see below), whose sum is σ = 380199636. Its totient is φ = 84488800.

The previous prime is 211221979. The next prime is 211222019. The reversal of 211222010 is 10222112.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 202179961 + 9042049 = 14219^2 + 3007^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×211222010² = 89229475016880200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 211221982 and 211222000.

It is not an unprimeable number, because it can be changed into a prime (211222019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10561091 + ... + 10561110.

Almost surely, 2^211222010 is an apocalyptic number.

211222010 is a deficient number, since it is larger than the sum of its proper divisors (168977626).

211222010 is a wasteful number, since it uses less digits than its factorization.

211222010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21122208.

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 211222010 is about 14533.4789365795. The cubic root of 211222010 is about 595.5429077169.

Adding to 211222010 its reverse (10222112), we get a palindrome (221444122).

It can be divided in two parts, 21122 and 2010, that added together give a palindrome (23132).

The spelling of 211222010 in words is "two hundred eleven million, two hundred twenty-two thousand, ten".