21102012120110 has 8 divisors (see below), whose sum is σ = 37983621816216. Its totient is φ = 8440804848040.

The previous prime is 21102012120073. The next prime is 21102012120139. The reversal of 21102012120110 is 1102121020112.

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

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 3 ways as a sum of consecutive naturals, for example, 1055100605996 + ... + 1055100606015.

It is an arithmetic number, because the mean of its divisors is an integer number (4747952727027).

Almost surely, 2^{21102012120110} is an apocalyptic number.

21102012120110 is a deficient number, since it is larger than the sum of its proper divisors (16881609696106).

21102012120110 is a wasteful number, since it uses less digits than its factorization.

21102012120110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2110201212018.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 21102012120110 its reverse (1102121020112), we get a palindrome (22204133140222).

The spelling of 21102012120110 in words is "twenty-one trillion, one hundred two billion, twelve million, one hundred twenty thousand, one hundred ten".