21202112120110 has 8 divisors (see below), whose sum is σ = 38163801816216. Its totient is φ = 8480844848040.

The previous prime is 21202112120107. The next prime is 21202112120131. The reversal of 21202112120110 is 1102121120212.

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 pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1060105605996 + ... + 1060105606015.

It is an arithmetic number, because the mean of its divisors is an integer number (4770475227027).

Almost surely, 2^{21202112120110} is an apocalyptic number.

21202112120110 is a deficient number, since it is larger than the sum of its proper divisors (16961689696106).

21202112120110 is a wasteful number, since it uses less digits than its factorization.

21202112120110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2120211212018.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 21202112120110 its reverse (1102121120212), we get a palindrome (22304233240322).

The spelling of 21202112120110 in words is "twenty-one trillion, two hundred two billion, one hundred twelve million, one hundred twenty thousand, one hundred ten".