211020122210 has 16 divisors (see below), whose sum is σ = 379854583992. Its totient is φ = 84403968000.

The previous prime is 211020122191. The next prime is 211020122263. The reversal of 211020122210 is 12221020112.

It can be written as a sum of positive squares in 4 ways, for example, as 170008607041 + 41011515169 = 412321^2 + 202513^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 288341 + ... + 710760.

Almost surely, 2^211020122210 is an apocalyptic number.

211020122210 is a deficient number, since it is larger than the sum of its proper divisors (168834461782).

211020122210 is a wasteful number, since it uses less digits than its factorization.

211020122210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1020229.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 211020122210 its reverse (12221020112), we get a palindrome (223241142322).

The spelling of 211020122210 in words is "two hundred eleven billion, twenty million, one hundred twenty-two thousand, two hundred ten".