21102100112110 has 64 divisors (see below), whose sum is σ = 40122953994240. Its totient is φ = 7974902770560.

The previous prime is 21102100112063. The next prime is 21102100112113. The reversal of 21102100112110 is 1121100120112.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21102100112113) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8070475 + ... + 10360345.

It is an arithmetic number, because the mean of its divisors is an integer number (626921156160).

Almost surely, 2^{21102100112110} is an apocalyptic number.

21102100112110 is a deficient number, since it is larger than the sum of its proper divisors (19020853882130).

21102100112110 is a wasteful number, since it uses less digits than its factorization.

21102100112110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2290393.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 21102100112110 its reverse (1121100120112), we get a palindrome (22223200232222).

The spelling of 21102100112110 in words is "twenty-one trillion, one hundred two billion, one hundred million, one hundred twelve thousand, one hundred ten".