21323121223322 has 4 divisors (see below), whose sum is σ = 31984681834986. Its totient is φ = 10661560611660.

The previous prime is 21323121223291. The next prime is 21323121223331. The reversal of 21323121223322 is 22332212132312.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 11331699655081 + 9991421568241 = 3366259^2 + 3160921^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5330780305829 + ... + 5330780305832.

Almost surely, 2^{21323121223322} is an apocalyptic number.

21323121223322 is a deficient number, since it is larger than the sum of its proper divisors (10661560611664).

21323121223322 is a wasteful number, since it uses less digits than its factorization.

21323121223322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10661560611663.

The product of its digits is 10368, while the sum is 29.

Adding to 21323121223322 its reverse (22332212132312), we get a palindrome (43655333355634).

The spelling of 21323121223322 in words is "twenty-one trillion, three hundred twenty-three billion, one hundred twenty-one million, two hundred twenty-three thousand, three hundred twenty-two".