21201112101110 has 8 divisors (see below), whose sum is σ = 38162001782016. Its totient is φ = 8480444840440.

The previous prime is 21201112101077. The next prime is 21201112101119. The reversal of 21201112101110 is 1110121110212.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21201112101119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1060055605046 + ... + 1060055605065.

It is an arithmetic number, because the mean of its divisors is an integer number (4770250222752).

Almost surely, 2^{21201112101110} is an apocalyptic number.

21201112101110 is a deficient number, since it is larger than the sum of its proper divisors (16960889680906).

21201112101110 is a wasteful number, since it uses less digits than its factorization.

21201112101110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2120111210118.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 21201112101110 its reverse (1110121110212), we get a palindrome (22311233211322).

The spelling of 21201112101110 in words is "twenty-one trillion, two hundred one billion, one hundred twelve million, one hundred one thousand, one hundred ten".