21316451131106 has 8 divisors (see below), whose sum is σ = 31986488554320. Its totient is φ = 10654288279668.

The previous prime is 21316451131091. The next prime is 21316451131111. The reversal of 21316451131106 is 60113115461312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1968636176 + ... + 1968647003.

It is an arithmetic number, because the mean of its divisors is an integer number (3998311069290).

Almost surely, 2^{21316451131106} is an apocalyptic number.

21316451131106 is a deficient number, since it is larger than the sum of its proper divisors (10670037423214).

21316451131106 is a wasteful number, since it uses less digits than its factorization.

21316451131106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3937285888.

The product of its (nonzero) digits is 12960, while the sum is 35.

Adding to 21316451131106 its reverse (60113115461312), we get a palindrome (81429566592418).

The spelling of 21316451131106 in words is "twenty-one trillion, three hundred sixteen billion, four hundred fifty-one million, one hundred thirty-one thousand, one hundred six".