21111120210110 has 16 divisors (see below), whose sum is σ = 43428590146656. Its totient is φ = 7238098357728.

The previous prime is 21111120210097. The next prime is 21111120210121. The reversal of 21111120210110 is 1101202111112.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 150793715717 + ... + 150793715856.

It is an arithmetic number, because the mean of its divisors is an integer number (2714286884166).

Almost surely, 2^{21111120210110} is an apocalyptic number.

21111120210110 is an abundant number, since it is smaller than the sum of its proper divisors (22317469936546).

21111120210110 is a wasteful number, since it uses less digits than its factorization.

21111120210110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 301587431587.

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

Adding to 21111120210110 its reverse (1101202111112), we get a palindrome (22212322321222).

The spelling of 21111120210110 in words is "twenty-one trillion, one hundred eleven billion, one hundred twenty million, two hundred ten thousand, one hundred ten".