1021221304013 has 8 divisors (see below), whose sum is σ = 1029142211328. Its totient is φ = 1013330231424.

The previous prime is 1021221304009. The next prime is 1021221304027. The reversal of 1021221304013 is 3104031221201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1021221304013 - 2² = 1021221304009 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 (1021221304513) 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, 7389956 + ... + 7526877.

It is an arithmetic number, because the mean of its divisors is an integer number (128642776416).

Almost surely, 2^{1021221304013} is an apocalyptic number.

It is an amenable number.

1021221304013 is a deficient number, since it is larger than the sum of its proper divisors (7920907315).

1021221304013 is a wasteful number, since it uses less digits than its factorization.

1021221304013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14917363.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 1021221304013 its reverse (3104031221201), we get a palindrome (4125252525214).

The spelling of 1021221304013 in words is "one trillion, twenty-one billion, two hundred twenty-one million, three hundred four thousand, thirteen".