211221201012110 has 32 divisors (see below), whose sum is σ = 391517941316832. Its totient is φ = 81998003767680.

The previous prime is 211221201012109. The next prime is 211221201012121. The reversal of 211221201012110 is 11210102122112.

It is a super-2 number, since 2×211221201012110² (a number of 29 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

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, 1564302221 + ... + 1564437240.

It is an arithmetic number, because the mean of its divisors is an integer number (12234935666151).

Almost surely, 2^{211221201012110} is an apocalyptic number.

211221201012110 is a deficient number, since it is larger than the sum of its proper divisors (180296740304722).

211221201012110 is a wasteful number, since it uses less digits than its factorization.

211221201012110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3128739668.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 211221201012110 its reverse (11210102122112), we get a palindrome (222431303134222).

The spelling of 211221201012110 in words is "two hundred eleven trillion, two hundred twenty-one billion, two hundred one million, twelve thousand, one hundred ten".