21223301121 has 48 divisors (see below), whose sum is σ = 34522158528. Its totient is φ = 12451017600.

The previous prime is 21223301119. The next prime is 21223301137. The reversal of 21223301121 is 12110332212.

21223301121 is a `hidden beast` number, since 21 + 223 + 301 + 121 = 666.

It is not a de Polignac number, because 21223301121 - 2¹ = 21223301119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21223301094 and 21223301103.

It is not an unprimeable number, because it can be changed into a prime (21223301111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 706906 + ... + 736316.

It is an arithmetic number, because the mean of its divisors is an integer number (719211636).

Almost surely, 2^21223301121 is an apocalyptic number.

It is an amenable number.

21223301121 is a deficient number, since it is larger than the sum of its proper divisors (13298857407).

21223301121 is a wasteful number, since it uses less digits than its factorization.

21223301121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29662 (or 29659 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 21223301121 its reverse (12110332212), we get a palindrome (33333633333).

The spelling of 21223301121 in words is "twenty-one billion, two hundred twenty-three million, three hundred one thousand, one hundred twenty-one".