20212122012143 has 2 divisors, whose sum is σ = 20212122012144. Its totient is φ = 20212122012142.

The previous prime is 20212122012107. The next prime is 20212122012167. The reversal of 20212122012143 is 34121022121202.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20212122012143 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20212122012193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10106061006071 + 10106061006072.

It is an arithmetic number, because the mean of its divisors is an integer number (10106061006072).

Almost surely, 2^{20212122012143} is an apocalyptic number.

20212122012143 is a deficient number, since it is larger than the sum of its proper divisors (1).

20212122012143 is an equidigital number, since it uses as much as digits as its factorization.

20212122012143 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 20212122012143 its reverse (34121022121202), we get a palindrome (54333144133345).

The spelling of 20212122012143 in words is "twenty trillion, two hundred twelve billion, one hundred twenty-two million, twelve thousand, one hundred forty-three".