1020021211143 has 12 divisors (see below), whose sum is σ = 1607306151048. Its totient is φ = 618194673360.

The previous prime is 1020021211091. The next prime is 1020021211151. The reversal of 1020021211143 is 3411121200201.

It is not a de Polignac number, because 1020021211143 - 2²¹ = 1020019113991 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020021211193) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5151622180 + ... + 5151622377.

It is an arithmetic number, because the mean of its divisors is an integer number (133942179254).

Almost surely, 2^{1020021211143} is an apocalyptic number.

1020021211143 is a deficient number, since it is larger than the sum of its proper divisors (587284939905).

1020021211143 is a wasteful number, since it uses less digits than its factorization.

1020021211143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10303244574 (or 10303244571 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 1020021211143 its reverse (3411121200201), we get a palindrome (4431142411344).

The spelling of 1020021211143 in words is "one trillion, twenty billion, twenty-one million, two hundred eleven thousand, one hundred forty-three".