21116021023223 has 8 divisors (see below), whose sum is σ = 25552159893792. Its totient is φ = 17034773262336.

The previous prime is 21116021023199. The next prime is 21116021023231. The reversal of 21116021023223 is 32232012061112.

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 21116021023223 - 2¹⁰ = 21116021022199 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21116021023192 and 21116021023201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21116021023243) 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, 88722777290 + ... + 88722777527.

It is an arithmetic number, because the mean of its divisors is an integer number (3194019986724).

Almost surely, 2^{21116021023223} is an apocalyptic number.

21116021023223 is a deficient number, since it is larger than the sum of its proper divisors (4436138870569).

21116021023223 is a wasteful number, since it uses less digits than its factorization.

21116021023223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177445554841.

The product of its (nonzero) digits is 1728, while the sum is 26.

Adding to 21116021023223 its reverse (32232012061112), we get a palindrome (53348033084335).

The spelling of 21116021023223 in words is "twenty-one trillion, one hundred sixteen billion, twenty-one million, twenty-three thousand, two hundred twenty-three".