1020330002421 has 6 divisors (see below), whose sum is σ = 1473810003510. Its totient is φ = 680220001608.

The previous prime is 1020330002407. The next prime is 1020330002479. The reversal of 1020330002421 is 1242000330201.

1020330002421 is a `hidden beast` number, since 10 + 203 + 30 + 0 + 0 + 2 + 421 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1009048376196 + 11281626225 = 1004514^2 + 106215^2 .

It is not a de Polignac number, because 1020330002421 - 2¹⁸ = 1020329740277 is a prime.

It is a super-2 number, since 2×1020330002421² (a number of 25 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1020330002394 and 1020330002403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020330002221) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 56685000126 + ... + 56685000143.

It is an arithmetic number, because the mean of its divisors is an integer number (245635000585).

Almost surely, 2^{1020330002421} is an apocalyptic number.

It is an amenable number.

1020330002421 is a deficient number, since it is larger than the sum of its proper divisors (453480001089).

1020330002421 is a wasteful number, since it uses less digits than its factorization.

1020330002421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113370000275 (or 113370000272 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 1020330002421 its reverse (1242000330201), we get a palindrome (2262330332622).

The spelling of 1020330002421 in words is "one trillion, twenty billion, three hundred thirty million, two thousand, four hundred twenty-one".