21102131010110 has 8 divisors (see below), whose sum is σ = 37983835818216. Its totient is φ = 8440852404040.

The previous prime is 21102131010097. The next prime is 21102131010113. The reversal of 21102131010110 is 1101013120112.

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 (21102131010113) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1055106550496 + ... + 1055106550515.

It is an arithmetic number, because the mean of its divisors is an integer number (4747979477277).

Almost surely, 2^{21102131010110} is an apocalyptic number.

21102131010110 is a deficient number, since it is larger than the sum of its proper divisors (16881704808106).

21102131010110 is a wasteful number, since it uses less digits than its factorization.

21102131010110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2110213101018.

The product of its (nonzero) digits is 12, while the sum is 14.

Adding to 21102131010110 its reverse (1101013120112), we get a palindrome (22203144130222).

The spelling of 21102131010110 in words is "twenty-one trillion, one hundred two billion, one hundred thirty-one million, ten thousand, one hundred ten".