21101231232305 has 8 divisors (see below), whose sum is σ = 28938831404352. Its totient is φ = 14469415702128.

The previous prime is 21101231232283. The next prime is 21101231232331. The reversal of 21101231232305 is 50323213210112.

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

It is a cyclic number.

It is not a de Polignac number, because 21101231232305 - 2⁸ = 21101231232049 is a prime.

It is a super-2 number, since 2×21101231232305² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 301446160427 + ... + 301446160496.

It is an arithmetic number, because the mean of its divisors is an integer number (3617353925544).

Almost surely, 2^{21101231232305} is an apocalyptic number.

It is an amenable number.

21101231232305 is a deficient number, since it is larger than the sum of its proper divisors (7837600172047).

21101231232305 is an equidigital number, since it uses as much as digits as its factorization.

21101231232305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 602892320935.

The product of its (nonzero) digits is 2160, while the sum is 26.

Adding to 21101231232305 its reverse (50323213210112), we get a palindrome (71424444442417).

The spelling of 21101231232305 in words is "twenty-one trillion, one hundred one billion, two hundred thirty-one million, two hundred thirty-two thousand, three hundred five".