21112100121110 has 16 divisors (see below), whose sum is σ = 39654031532256. Its totient is φ = 8077673089728.

The previous prime is 21112100121109. The next prime is 21112100121121. The reversal of 21112100121110 is 1112100121112.

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, 45895869599 + ... + 45895870058.

It is an arithmetic number, because the mean of its divisors is an integer number (2478376970766).

Almost surely, 2^{21112100121110} is an apocalyptic number.

21112100121110 is a deficient number, since it is larger than the sum of its proper divisors (18541931411146).

21112100121110 is a wasteful number, since it uses less digits than its factorization.

21112100121110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91791739687.

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

Adding to 21112100121110 its reverse (1112100121112), we get a palindrome (22224200242222).

The spelling of 21112100121110 in words is "twenty-one trillion, one hundred twelve billion, one hundred million, one hundred twenty-one thousand, one hundred ten".