321121001143 has 2 divisors, whose sum is σ = 321121001144. Its totient is φ = 321121001142.

The previous prime is 321121001107. The next prime is 321121001161. The reversal of 321121001143 is 341100121123.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 321121001143 - 2¹⁷ = 321120870071 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 321121001143.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (321121005143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160560500571 + 160560500572.

It is an arithmetic number, because the mean of its divisors is an integer number (160560500572).

Almost surely, 2^321121001143 is an apocalyptic number.

321121001143 is a deficient number, since it is larger than the sum of its proper divisors (1).

321121001143 is an equidigital number, since it uses as much as digits as its factorization.

321121001143 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 321121001143 its reverse (341100121123), we get a palindrome (662221122266).

The spelling of 321121001143 in words is "three hundred twenty-one billion, one hundred twenty-one million, one thousand, one hundred forty-three".