21112110212110 has 8 divisors (see below), whose sum is σ = 38001798381816. Its totient is φ = 8444844084840.

The previous prime is 21112110212077. The next prime is 21112110212117. The reversal of 21112110212110 is 1121201121112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×21112110212110³ (a number of 41 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21112110212117) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1055605510596 + ... + 1055605510615.

It is an arithmetic number, because the mean of its divisors is an integer number (4750224797727).

Almost surely, 2^{21112110212110} is an apocalyptic number.

21112110212110 is a deficient number, since it is larger than the sum of its proper divisors (16889688169706).

21112110212110 is a wasteful number, since it uses less digits than its factorization.

21112110212110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2111211021218.

The product of its (nonzero) digits is 16, while the sum is 16.

Adding to 21112110212110 its reverse (1121201121112), we get a palindrome (22233311333222).

The spelling of 21112110212110 in words is "twenty-one trillion, one hundred twelve billion, one hundred ten million, two hundred twelve thousand, one hundred ten".