1213003232251 has 2 divisors, whose sum is σ = 1213003232252. Its totient is φ = 1213003232250.

The previous prime is 1213003232141. The next prime is 1213003232269. The reversal of 1213003232251 is 1522323003121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1213003232251 - 2⁷ = 1213003232123 is a prime.

It is not a weakly prime, because it can be changed into another prime (1213003232281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606501616125 + 606501616126.

It is an arithmetic number, because the mean of its divisors is an integer number (606501616126).

Almost surely, 2^{1213003232251} is an apocalyptic number.

1213003232251 is a deficient number, since it is larger than the sum of its proper divisors (1).

1213003232251 is an equidigital number, since it uses as much as digits as its factorization.

1213003232251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160, while the sum is 25.

Adding to 1213003232251 its reverse (1522323003121), we get a palindrome (2735326235372).

The spelling of 1213003232251 in words is "one trillion, two hundred thirteen billion, three million, two hundred thirty-two thousand, two hundred fifty-one".