21223121121322 has 8 divisors (see below), whose sum is σ = 31966775797572. Its totient is φ = 10567529188800.

The previous prime is 21223121121281. The next prime is 21223121121341. The reversal of 21223121121322 is 22312112132212.

It can be written as a sum of positive squares in 2 ways, for example, as 19687581310761 + 1535539810561 = 4437069^2 + 1239169^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22015685329 + ... + 22015686292.

Almost surely, 2^{21223121121322} is an apocalyptic number.

21223121121322 is a deficient number, since it is larger than the sum of its proper divisors (10743654676250).

21223121121322 is a wasteful number, since it uses less digits than its factorization.

21223121121322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44031371864.

The product of its digits is 1152, while the sum is 25.

Adding to 21223121121322 its reverse (22312112132212), we get a palindrome (43535233253534).

The spelling of 21223121121322 in words is "twenty-one trillion, two hundred twenty-three billion, one hundred twenty-one million, one hundred twenty-one thousand, three hundred twenty-two".