1021304041021 has 4 divisors (see below), whose sum is σ = 1114149862944. Its totient is φ = 928458219100.

The previous prime is 1021304040989. The next prime is 1021304041033. The reversal of 1021304041021 is 1201404031201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1021304041021 - 2⁵ = 1021304040989 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1021304041021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021304041061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46422910945 + ... + 46422910966.

It is an arithmetic number, because the mean of its divisors is an integer number (278537465736).

Almost surely, 2^{1021304041021} is an apocalyptic number.

1021304041021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1021304041021 is a deficient number, since it is larger than the sum of its proper divisors (92845821923).

1021304041021 is an equidigital number, since it uses as much as digits as its factorization.

1021304041021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92845821922.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 1021304041021 its reverse (1201404031201), we get a palindrome (2222708072222).

The spelling of 1021304041021 in words is "one trillion, twenty-one billion, three hundred four million, forty-one thousand, twenty-one".