21210120120110 has 8 divisors (see below), whose sum is σ = 38178216216216. Its totient is φ = 8484048048040.

The previous prime is 21210120120073. The next prime is 21210120120173. The reversal of 21210120120110 is 1102102101212.

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, 1060506005996 + ... + 1060506006015.

It is an arithmetic number, because the mean of its divisors is an integer number (4772277027027).

Almost surely, 2^{21210120120110} is an apocalyptic number.

21210120120110 is a deficient number, since it is larger than the sum of its proper divisors (16968096096106).

21210120120110 is a wasteful number, since it uses less digits than its factorization.

21210120120110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2121012012018.

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

Adding to 21210120120110 its reverse (1102102101212), we get a palindrome (22312222221322).

The spelling of 21210120120110 in words is "twenty-one trillion, two hundred ten billion, one hundred twenty million, one hundred twenty thousand, one hundred ten".