2121201020143 has 2 divisors, whose sum is σ = 2121201020144. Its totient is φ = 2121201020142.

The previous prime is 2121201020023. The next prime is 2121201020177. The reversal of 2121201020143 is 3410201021212.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2121201020143 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2121201020143.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2121261020143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060600510071 + 1060600510072.

It is an arithmetic number, because the mean of its divisors is an integer number (1060600510072).

Almost surely, 2^{2121201020143} is an apocalyptic number.

2121201020143 is a deficient number, since it is larger than the sum of its proper divisors (1).

2121201020143 is an equidigital number, since it uses as much as digits as its factorization.

2121201020143 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 2121201020143 its reverse (3410201021212), we get a palindrome (5531402041355).

The spelling of 2121201020143 in words is "two trillion, one hundred twenty-one billion, two hundred one million, twenty thousand, one hundred forty-three".