21223023130121 has 8 divisors (see below), whose sum is σ = 21805811446464. Its totient is φ = 20640718661040.

The previous prime is 21223023130103. The next prime is 21223023130189. The reversal of 21223023130121 is 12103132032212.

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-21223023130121 is a prime.

It is a super-3 number, since 3×21223023130121³ (a number of 41 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21223023130021) 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, 120872885 + ... + 121048338.

It is an arithmetic number, because the mean of its divisors is an integer number (2725726430808).

Almost surely, 2^{21223023130121} is an apocalyptic number.

It is an amenable number.

21223023130121 is a deficient number, since it is larger than the sum of its proper divisors (582788316343).

21223023130121 is a wasteful number, since it uses less digits than its factorization.

21223023130121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241923631.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 21223023130121 its reverse (12103132032212), we get a palindrome (33326155162333).

The spelling of 21223023130121 in words is "twenty-one trillion, two hundred twenty-three billion, twenty-three million, one hundred thirty thousand, one hundred twenty-one".