10256070421 has 2 divisors, whose sum is σ = 10256070422. Its totient is φ = 10256070420.

The previous prime is 10256070413. The next prime is 10256070427. The reversal of 10256070421 is 12407065201.

10256070421 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9199495396 + 1056575025 = 95914^2 + 32505^2 .

It is a cyclic number.

It is not a de Polignac number, because 10256070421 - 2³ = 10256070413 is a prime.

It is a super-2 number, since 2×10256070421² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 10256070421.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10256070427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5128035210 + 5128035211.

It is an arithmetic number, because the mean of its divisors is an integer number (5128035211).

Almost surely, 2^10256070421 is an apocalyptic number.

It is an amenable number.

10256070421 is a deficient number, since it is larger than the sum of its proper divisors (1).

10256070421 is an equidigital number, since it uses as much as digits as its factorization.

10256070421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3360, while the sum is 28.

The spelling of 10256070421 in words is "ten billion, two hundred fifty-six million, seventy thousand, four hundred twenty-one".