21112210112110 has 24 divisors (see below), whose sum is σ = 41150071073880. Its totient is φ = 7795277579232.

The previous prime is 21112210112011. The next prime is 21112210112129. The reversal of 21112210112110 is 1121101221112.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6246214320 + ... + 6246217699.

It is an arithmetic number, because the mean of its divisors is an integer number (1714586294745).

Almost surely, 2^{21112210112110} is an apocalyptic number.

21112210112110 is a deficient number, since it is larger than the sum of its proper divisors (20037860961770).

21112210112110 is a wasteful number, since it uses less digits than its factorization.

21112210112110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12492432052 (or 12492432039 counting only the distinct ones).

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

Adding to 21112210112110 its reverse (1121101221112), we get a palindrome (22233311333222).

The spelling of 21112210112110 in words is "twenty-one trillion, one hundred twelve billion, two hundred ten million, one hundred twelve thousand, one hundred ten".