21212110011110 has 24 divisors (see below), whose sum is σ = 40297133097216. Its totient is φ = 8038273266000.

The previous prime is 21212110011083. The next prime is 21212110011139. The reversal of 21212110011110 is 1111001121212.

It is a super-3 number, since 3×21212110011110³ (a number of 41 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2937961766 + ... + 2937968985.

It is an arithmetic number, because the mean of its divisors is an integer number (1679047212384).

Almost surely, 2^{21212110011110} is an apocalyptic number.

21212110011110 is a deficient number, since it is larger than the sum of its proper divisors (19085023086106).

21212110011110 is a wasteful number, since it uses less digits than its factorization.

21212110011110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5875930796 (or 5875930777 counting only the distinct ones).

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

Adding to 21212110011110 its reverse (1111001121212), we get a palindrome (22323111132322).

The spelling of 21212110011110 in words is "twenty-one trillion, two hundred twelve billion, one hundred ten million, eleven thousand, one hundred ten".