10010002421 has 2 divisors, whose sum is σ = 10010002422. Its totient is φ = 10010002420.

The previous prime is 10010002417. The next prime is 10010002423. The reversal of 10010002421 is 12420001001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9042108100 + 967894321 = 95090^2 + 31111^2 .

It is a cyclic number.

It is not a de Polignac number, because 10010002421 - 2² = 10010002417 is a prime.

It is a super-2 number, since 2×10010002421² (a number of 21 digits) contains 22 as substring.

Together with 10010002423, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10010002423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5005001210 + 5005001211.

It is an arithmetic number, because the mean of its divisors is an integer number (5005001211).

Almost surely, 2^10010002421 is an apocalyptic number.

It is an amenable number.

10010002421 is a deficient number, since it is larger than the sum of its proper divisors (1).

10010002421 is an equidigital number, since it uses as much as digits as its factorization.

10010002421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 10010002421 its reverse (12420001001), we get a palindrome (22430003422).

The spelling of 10010002421 in words is "ten billion, ten million, two thousand, four hundred twenty-one".