1020120221143 has 2 divisors, whose sum is σ = 1020120221144. Its totient is φ = 1020120221142.

The previous prime is 1020120221083. The next prime is 1020120221147. The reversal of 1020120221143 is 3411220210201.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1020120221143 - 2²¹ = 1020118123991 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1020120221143.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1020120221147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510060110571 + 510060110572.

It is an arithmetic number, because the mean of its divisors is an integer number (510060110572).

Almost surely, 2^{1020120221143} is an apocalyptic number.

1020120221143 is a deficient number, since it is larger than the sum of its proper divisors (1).

1020120221143 is an equidigital number, since it uses as much as digits as its factorization.

1020120221143 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 1020120221143 its reverse (3411220210201), we get a palindrome (4431340431344).

The spelling of 1020120221143 in words is "one trillion, twenty billion, one hundred twenty million, two hundred twenty-one thousand, one hundred forty-three".