21112122110102 has 8 divisors (see below), whose sum is σ = 31668352960176. Its totient is φ = 10556004456712.

The previous prime is 21112122110059. The next prime is 21112122110173. The reversal of 21112122110102 is 20101122121112.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27831353 + ... + 28579860.

It is an arithmetic number, because the mean of its divisors is an integer number (3958544120022).

Almost surely, 2^{21112122110102} is an apocalyptic number.

21112122110102 is a deficient number, since it is larger than the sum of its proper divisors (10556230850074).

21112122110102 is a wasteful number, since it uses less digits than its factorization.

21112122110102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56598342.

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

Adding to 21112122110102 its reverse (20101122121112), we get a palindrome (41213244231214).

The spelling of 21112122110102 in words is "twenty-one trillion, one hundred twelve billion, one hundred twenty-two million, one hundred ten thousand, one hundred two".