12222121073 has 2 divisors, whose sum is σ = 12222121074. Its totient is φ = 12222121072.

The previous prime is 12222121069. The next prime is 12222121103. The reversal of 12222121073 is 37012122221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8711795569 + 3510325504 = 93337^2 + 59248^2 .

It is a cyclic number.

It is not a de Polignac number, because 12222121073 - 2² = 12222121069 is a prime.

It is not a weakly prime, because it can be changed into another prime (12222121273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6111060536 + 6111060537.

It is an arithmetic number, because the mean of its divisors is an integer number (6111060537).

Almost surely, 2^12222121073 is an apocalyptic number.

It is an amenable number.

12222121073 is a deficient number, since it is larger than the sum of its proper divisors (1).

12222121073 is an equidigital number, since it uses as much as digits as its factorization.

12222121073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 672, while the sum is 23.

Adding to 12222121073 its reverse (37012122221), we get a palindrome (49234243294).

The spelling of 12222121073 in words is "twelve billion, two hundred twenty-two million, one hundred twenty-one thousand, seventy-three".