22021001323 has 16 divisors (see below), whose sum is σ = 23851177056. Its totient is φ = 20253376000.

The previous prime is 22021001269. The next prime is 22021001329. The reversal of 22021001323 is 32310012022.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22021001323 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22021001297 and 22021001306.

It is not an unprimeable number, because it can be changed into a prime (22021001329) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 177465 + ... + 274837.

It is an arithmetic number, because the mean of its divisors is an integer number (1490698566).

Almost surely, 2^22021001323 is an apocalyptic number.

22021001323 is a deficient number, since it is larger than the sum of its proper divisors (1830175733).

22021001323 is a wasteful number, since it uses less digits than its factorization.

22021001323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97694.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 22021001323 its reverse (32310012022), we get a palindrome (54331013345).

The spelling of 22021001323 in words is "twenty-two billion, twenty-one million, one thousand, three hundred twenty-three".