21322121120023 has 32 divisors (see below), whose sum is σ = 22229202600000. Its totient is φ = 20437479186432.

The previous prime is 21322121119993. The next prime is 21322121120051. The reversal of 21322121120023 is 32002112122312.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21322121120023 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21322121119976 and 21322121120003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21322121120123) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 735002943 + ... + 735031951.

It is an arithmetic number, because the mean of its divisors is an integer number (694662581250).

Almost surely, 2^{21322121120023} is an apocalyptic number.

21322121120023 is a deficient number, since it is larger than the sum of its proper divisors (907081479977).

21322121120023 is a wasteful number, since it uses less digits than its factorization.

21322121120023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30579.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 21322121120023 its reverse (32002112122312), we get a palindrome (53324233242335).

The spelling of 21322121120023 in words is "twenty-one trillion, three hundred twenty-two billion, one hundred twenty-one million, one hundred twenty thousand, twenty-three".