22012000321 has 2 divisors, whose sum is σ = 22012000322. Its totient is φ = 22012000320.

The previous prime is 22012000301. The next prime is 22012000331. The reversal of 22012000321 is 12300021022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21145522225 + 866478096 = 145415^2 + 29436^2 .

It is a cyclic number.

It is not a de Polignac number, because 22012000321 - 2⁹ = 22011999809 is a prime.

It is not a weakly prime, because it can be changed into another prime (22012000301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11006000160 + 11006000161.

It is an arithmetic number, because the mean of its divisors is an integer number (11006000161).

Almost surely, 2^22012000321 is an apocalyptic number.

It is an amenable number.

22012000321 is a deficient number, since it is larger than the sum of its proper divisors (1).

22012000321 is an equidigital number, since it uses as much as digits as its factorization.

22012000321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 13.

Adding to 22012000321 its reverse (12300021022), we get a palindrome (34312021343).

The spelling of 22012000321 in words is "twenty-two billion, twelve million, three hundred twenty-one", and thus it is an aban number.