21212101101110 has 32 divisors (see below), whose sum is σ = 39128837929632. Its totient is φ = 8274980609280.

The previous prime is 21212101101101. The next prime is 21212101101167. The reversal of 21212101101110 is 1110110121212.

It is a super-3 number, since 3×21212101101110³ (a number of 41 digits) contains 333 as substring.

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, 37030799 + ... + 37599258.

It is an arithmetic number, because the mean of its divisors is an integer number (1222776185301).

Almost surely, 2^{21212101101110} is an apocalyptic number.

21212101101110 is a deficient number, since it is larger than the sum of its proper divisors (17916736828522).

21212101101110 is a wasteful number, since it uses less digits than its factorization.

21212101101110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74630768.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 21212101101110 its reverse (1110110121212), we get a palindrome (22322211222322).

The spelling of 21212101101110 in words is "twenty-one trillion, two hundred twelve billion, one hundred one million, one hundred one thousand, one hundred ten".