211101212222210 has 32 divisors (see below), whose sum is σ = 384856880213232. Its totient is φ = 83361560371200.

The previous prime is 211101212222209. The next prime is 211101212222227. The reversal of 211101212222210 is 12222212101112.

It can be written as a sum of positive squares in 8 ways, for example, as 196981421490049 + 14119790732161 = 14035007^2 + 3757631^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 270970277 + ... + 271748216.

Almost surely, 2^{211101212222210} is an apocalyptic number.

211101212222210 is a deficient number, since it is larger than the sum of its proper divisors (173755667991022).

211101212222210 is a wasteful number, since it uses less digits than its factorization.

211101212222210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 542718998.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 211101212222210 its reverse (12222212101112), we get a palindrome (223323424323322).

The spelling of 211101212222210 in words is "two hundred eleven trillion, one hundred one billion, two hundred twelve million, two hundred twenty-two thousand, two hundred ten".