1021203104543 has 8 divisors (see below), whose sum is σ = 1027855319040. Its totient is φ = 1014570718840.

The previous prime is 1021203104531. The next prime is 1021203104567. The reversal of 1021203104543 is 3454013021201.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1021203104543 - 2¹² = 1021203100447 is a prime.

It is a super-2 number, since 2×1021203104543² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021203104443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4853855 + ... + 5059872.

It is an arithmetic number, because the mean of its divisors is an integer number (128481914880).

Almost surely, 2^{1021203104543} is an apocalyptic number.

1021203104543 is a deficient number, since it is larger than the sum of its proper divisors (6652214497).

1021203104543 is an equidigital number, since it uses as much as digits as its factorization.

1021203104543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9914397.

The product of its (nonzero) digits is 2880, while the sum is 26.

Adding to 1021203104543 its reverse (3454013021201), we get a palindrome (4475216125744).

The spelling of 1021203104543 in words is "one trillion, twenty-one billion, two hundred three million, one hundred four thousand, five hundred forty-three".