10501206421 has 2 divisors, whose sum is σ = 10501206422. Its totient is φ = 10501206420.

The previous prime is 10501206413. The next prime is 10501206427. The reversal of 10501206421 is 12460210501.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9533374321 + 967832100 = 97639^2 + 31110^2 .

It is an emirp because it is prime and its reverse (12460210501) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 10501206421 - 2³ = 10501206413 is a prime.

It is a super-2 number, since 2×10501206421² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 10501206392 and 10501206401.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10501206427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5250603210 + 5250603211.

It is an arithmetic number, because the mean of its divisors is an integer number (5250603211).

Almost surely, 2^10501206421 is an apocalyptic number.

It is an amenable number.

10501206421 is a deficient number, since it is larger than the sum of its proper divisors (1).

10501206421 is an equidigital number, since it uses as much as digits as its factorization.

10501206421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 480, while the sum is 22.

Adding to 10501206421 its reverse (12460210501), we get a palindrome (22961416922).

The spelling of 10501206421 in words is "ten billion, five hundred one million, two hundred six thousand, four hundred twenty-one".