1021104204240 has 80 divisors (see below), whose sum is σ = 3178034467776. Its totient is φ = 271209600000.

The previous prime is 1021104204223. The next prime is 1021104204257. The reversal of 1021104204240 is 424024011201.

It is an interprime number because it is at equal distance from previous prime (1021104204223) and next prime (1021104204257).

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8415061 + ... + 8535540.

Almost surely, 2^{1021104204240} is an apocalyptic number.

1021104204240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1021104204240 is an abundant number, since it is smaller than the sum of its proper divisors (2156930263536).

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

1021104204240 is a wasteful number, since it uses less digits than its factorization.

1021104204240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16950868 (or 16950862 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 1021104204240 its reverse (424024011201), we get a palindrome (1445128215441).

The spelling of 1021104204240 in words is "one trillion, twenty-one billion, one hundred four million, two hundred four thousand, two hundred forty".