12233212020721 has 2 divisors, whose sum is σ = 12233212020722. Its totient is φ = 12233212020720.

The previous prime is 12233212020713. The next prime is 12233212020779. The reversal of 12233212020721 is 12702021233221.

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., 9583606147600 + 2649605873121 = 3095740^2 + 1627761^2 .

It is a cyclic number.

It is not a de Polignac number, because 12233212020721 - 2³ = 12233212020713 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12233212020721.

It is not a weakly prime, because it can be changed into another prime (12233212029721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6116606010360 + 6116606010361.

It is an arithmetic number, because the mean of its divisors is an integer number (6116606010361).

Almost surely, 2^{12233212020721} is an apocalyptic number.

It is an amenable number.

12233212020721 is a deficient number, since it is larger than the sum of its proper divisors (1).

12233212020721 is an equidigital number, since it uses as much as digits as its factorization.

12233212020721 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 28.

Adding to 12233212020721 its reverse (12702021233221), we get a palindrome (24935233253942).

The spelling of 12233212020721 in words is "twelve trillion, two hundred thirty-three billion, two hundred twelve million, twenty thousand, seven hundred twenty-one".