1212333312401 has 2 divisors, whose sum is σ = 1212333312402. Its totient is φ = 1212333312400.

The previous prime is 1212333312397. The next prime is 1212333312457. The reversal of 1212333312401 is 1042133332121.

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., 763063396225 + 449269916176 = 873535^2 + 670276^2 .

It is a cyclic number.

It is not a de Polignac number, because 1212333312401 - 2² = 1212333312397 is a prime.

It is not a weakly prime, because it can be changed into another prime (1212333312461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606166656200 + 606166656201.

It is an arithmetic number, because the mean of its divisors is an integer number (606166656201).

Almost surely, 2^{1212333312401} is an apocalyptic number.

It is an amenable number.

1212333312401 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212333312401 is an equidigital number, since it uses as much as digits as its factorization.

1212333312401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 26.

Adding to 1212333312401 its reverse (1042133332121), we get a palindrome (2254466644522).

The spelling of 1212333312401 in words is "one trillion, two hundred twelve billion, three hundred thirty-three million, three hundred twelve thousand, four hundred one".