1020203045441 has 2 divisors, whose sum is σ = 1020203045442. Its totient is φ = 1020203045440.

The previous prime is 1020203045437. The next prime is 1020203045443. The reversal of 1020203045441 is 1445403020201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 797947371841 + 222255673600 = 893279^2 + 471440^2 .

It is a cyclic number.

It is not a de Polignac number, because 1020203045441 - 2² = 1020203045437 is a prime.

It is a super-2 number, since 2×1020203045441² (a number of 25 digits) contains 22 as substring.

Together with 1020203045443, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1020203045441.

It is not a weakly prime, because it can be changed into another prime (1020203045443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510101522720 + 510101522721.

It is an arithmetic number, because the mean of its divisors is an integer number (510101522721).

Almost surely, 2^{1020203045441} is an apocalyptic number.

It is an amenable number.

1020203045441 is a deficient number, since it is larger than the sum of its proper divisors (1).

1020203045441 is an equidigital number, since it uses as much as digits as its factorization.

1020203045441 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3840, while the sum is 26.

Adding to 1020203045441 its reverse (1445403020201), we get a palindrome (2465606065642).

The spelling of 1020203045441 in words is "one trillion, twenty billion, two hundred three million, forty-five thousand, four hundred forty-one".