21113332156163 has 8 divisors (see below), whose sum is σ = 22739767050000. Its totient is φ = 19487230465248.

The previous prime is 21113332156117. The next prime is 21113332156171. The reversal of 21113332156163 is 36165123331112.

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

It is not a de Polignac number, because 21113332156163 - 2²⁶ = 21113265047299 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21113332156363) 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, 83169113 + ... + 83422586.

It is an arithmetic number, because the mean of its divisors is an integer number (2842470881250).

Almost surely, 2^{21113332156163} is an apocalyptic number.

21113332156163 is a deficient number, since it is larger than the sum of its proper divisors (1626434893837).

21113332156163 is a wasteful number, since it uses less digits than its factorization.

21113332156163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166601461.

The product of its digits is 58320, while the sum is 38.

Adding to 21113332156163 its reverse (36165123331112), we get a palindrome (57278455487275).

The spelling of 21113332156163 in words is "twenty-one trillion, one hundred thirteen billion, three hundred thirty-two million, one hundred fifty-six thousand, one hundred sixty-three".