20112202321 has 2 divisors, whose sum is σ = 20112202322. Its totient is φ = 20112202320.

The previous prime is 20112202309. The next prime is 20112202339. The reversal of 20112202321 is 12320221102.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16876867921 + 3235334400 = 129911^2 + 56880^2 .

It is a cyclic number.

It is not a de Polignac number, because 20112202321 - 2¹⁷ = 20112071249 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20112202295 and 20112202304.

It is not a weakly prime, because it can be changed into another prime (20112202921) by changing a digit.

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 as a sum of consecutive naturals, namely, 10056101160 + 10056101161.

It is an arithmetic number, because the mean of its divisors is an integer number (10056101161).

Almost surely, 2^20112202321 is an apocalyptic number.

It is an amenable number.

20112202321 is a deficient number, since it is larger than the sum of its proper divisors (1).

20112202321 is an equidigital number, since it uses as much as digits as its factorization.

20112202321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 20112202321 its reverse (12320221102), we get a palindrome (32432423423).

The spelling of 20112202321 in words is "twenty billion, one hundred twelve million, two hundred two thousand, three hundred twenty-one".