1211120202143 has 2 divisors, whose sum is σ = 1211120202144. Its totient is φ = 1211120202142.

The previous prime is 1211120202091. The next prime is 1211120202163. The reversal of 1211120202143 is 3412020211121.

It is an a-pointer prime, because the next prime (1211120202163) can be obtained adding 1211120202143 to its sum of digits (20).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1211120202143 - 2⁶ = 1211120202079 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1211120202163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605560101071 + 605560101072.

It is an arithmetic number, because the mean of its divisors is an integer number (605560101072).

Almost surely, 2^{1211120202143} is an apocalyptic number.

1211120202143 is a deficient number, since it is larger than the sum of its proper divisors (1).

1211120202143 is an equidigital number, since it uses as much as digits as its factorization.

1211120202143 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 20.

Adding to 1211120202143 its reverse (3412020211121), we get a palindrome (4623140413264).

The spelling of 1211120202143 in words is "one trillion, two hundred eleven billion, one hundred twenty million, two hundred two thousand, one hundred forty-three".