1213321202143 has 2 divisors, whose sum is σ = 1213321202144. Its totient is φ = 1213321202142.

The previous prime is 1213321202059. The next prime is 1213321202153. The reversal of 1213321202143 is 3412021233121.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1213321202143 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1213321202153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606660601071 + 606660601072.

It is an arithmetic number, because the mean of its divisors is an integer number (606660601072).

Almost surely, 2^{1213321202143} is an apocalyptic number.

1213321202143 is a deficient number, since it is larger than the sum of its proper divisors (1).

1213321202143 is an equidigital number, since it uses as much as digits as its factorization.

1213321202143 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 1213321202143 its reverse (3412021233121), we get a palindrome (4625342435264).

The spelling of 1213321202143 in words is "one trillion, two hundred thirteen billion, three hundred twenty-one million, two hundred two thousand, one hundred forty-three".