1021203135304 has 32 divisors (see below), whose sum is σ = 2139771543840. Its totient is φ = 452861699200.

The previous prime is 1021203135299. The next prime is 1021203135307. The reversal of 1021203135304 is 4035313021201.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1021203135307) 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, 141515674 + ... + 141522889.

It is an arithmetic number, because the mean of its divisors is an integer number (66867860745).

Almost surely, 2^{1021203135304} is an apocalyptic number.

It is an amenable number.

1021203135304 is an abundant number, since it is smaller than the sum of its proper divisors (1118568408536).

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

1021203135304 is a wasteful number, since it uses less digits than its factorization.

1021203135304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283038621 (or 283038617 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

Adding to 1021203135304 its reverse (4035313021201), we get a palindrome (5056516156505).

The spelling of 1021203135304 in words is "one trillion, twenty-one billion, two hundred three million, one hundred thirty-five thousand, three hundred four".