20213222121223 has 16 divisors (see below), whose sum is σ = 21389734319616. Its totient is φ = 19061531707680.

The previous prime is 20213222121187. The next prime is 20213222121233. The reversal of 20213222121223 is 32212122231202.

It is not a de Polignac number, because 20213222121223 - 2⁴¹ = 18014198865671 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20213222121233) 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, 64973761 + ... + 65284117.

It is an arithmetic number, because the mean of its divisors is an integer number (1336858394976).

Almost surely, 2^{20213222121223} is an apocalyptic number.

20213222121223 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

20213222121223 is a deficient number, since it is larger than the sum of its proper divisors (1176512198393).

20213222121223 is a wasteful number, since it uses less digits than its factorization.

20213222121223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 350334.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 20213222121223 its reverse (32212122231202), we get a palindrome (52425344352425).

The spelling of 20213222121223 in words is "twenty trillion, two hundred thirteen billion, two hundred twenty-two million, one hundred twenty-one thousand, two hundred twenty-three".