21101130121223 has 8 divisors (see below), whose sum is σ = 21183077723808. Its totient is φ = 21019195512864.

The previous prime is 21101130121213. The next prime is 21101130121229. The reversal of 21101130121223 is 32212103110112.

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 21101130121223 - 2¹⁴ = 21101130104839 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21101130121195 and 21101130121204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21101130121229) 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, 11861 + ... + 6496337.

It is an arithmetic number, because the mean of its divisors is an integer number (2647884715476).

Almost surely, 2^{21101130121223} is an apocalyptic number.

21101130121223 is a deficient number, since it is larger than the sum of its proper divisors (81947602585).

21101130121223 is a wasteful number, since it uses less digits than its factorization.

21101130121223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6497113.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 21101130121223 its reverse (32212103110112), we get a palindrome (53313233231335).

The spelling of 21101130121223 in words is "twenty-one trillion, one hundred one billion, one hundred thirty million, one hundred twenty-one thousand, two hundred twenty-three".