1021205345304 has 16 divisors (see below), whose sum is σ = 2553013363320. Its totient is φ = 340401781760.

The previous prime is 1021205345263. The next prime is 1021205345399. The reversal of 1021205345304 is 4035435021201.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21275111337 + ... + 21275111384.

Almost surely, 2^{1021205345304} is an apocalyptic number.

It is an amenable number.

1021205345304 is an abundant number, since it is smaller than the sum of its proper divisors (1531808018016).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1021205345304 is a wasteful number, since it uses less digits than its factorization.

1021205345304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42550222730 (or 42550222726 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

The spelling of 1021205345304 in words is "one trillion, twenty-one billion, two hundred five million, three hundred forty-five thousand, three hundred four".