1021303343215 has 4 divisors (see below), whose sum is σ = 1225564011864. Its totient is φ = 817042674568.

The previous prime is 1021303343213. The next prime is 1021303343243. The reversal of 1021303343215 is 5123433031201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1021303343215 - 2¹ = 1021303343213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021303343213) 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, 102130334317 + ... + 102130334326.

It is an arithmetic number, because the mean of its divisors is an integer number (306391002966).

Almost surely, 2^{1021303343215} is an apocalyptic number.

1021303343215 is a deficient number, since it is larger than the sum of its proper divisors (204260668649).

1021303343215 is an equidigital number, since it uses as much as digits as its factorization.

1021303343215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204260668648.

The product of its (nonzero) digits is 6480, while the sum is 28.

Adding to 1021303343215 its reverse (5123433031201), we get a palindrome (6144736374416).

The spelling of 1021303343215 in words is "one trillion, twenty-one billion, three hundred three million, three hundred forty-three thousand, two hundred fifteen".