21113161102351 has 8 divisors (see below), whose sum is σ = 21154665039200. Its totient is φ = 21071678342400.

The previous prime is 21113161102339. The next prime is 21113161102357. The reversal of 21113161102351 is 15320116131112.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21113161102351 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21113161102357) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3297546 + ... + 7286983.

It is an arithmetic number, because the mean of its divisors is an integer number (2644333129900).

Almost surely, 2^{21113161102351} is an apocalyptic number.

21113161102351 is a deficient number, since it is larger than the sum of its proper divisors (41503936849).

21113161102351 is a wasteful number, since it uses less digits than its factorization.

21113161102351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10588449.

The product of its (nonzero) digits is 1080, while the sum is 28.

Adding to 21113161102351 its reverse (15320116131112), we get a palindrome (36433277233463).

The spelling of 21113161102351 in words is "twenty-one trillion, one hundred thirteen billion, one hundred sixty-one million, one hundred two thousand, three hundred fifty-one".