10508770450021 has 2 divisors, whose sum is σ = 10508770450022. Its totient is φ = 10508770450020.

The previous prime is 10508770449977. The next prime is 10508770450051. The reversal of 10508770450021 is 12005407780501.

10508770450021 is digitally balanced in base 2, 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., 9686946612996 + 821823837025 = 3112386^2 + 906545^2 .

It is an emirp because it is prime and its reverse (12005407780501) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 10508770450021 - 2⁷ = 10508770449893 is a prime.

It is a super-2 number, since 2×10508770450021² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10508770450051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5254385225010 + 5254385225011.

It is an arithmetic number, because the mean of its divisors is an integer number (5254385225011).

Almost surely, 2^{10508770450021} is an apocalyptic number.

It is an amenable number.

10508770450021 is a deficient number, since it is larger than the sum of its proper divisors (1).

10508770450021 is an equidigital number, since it uses as much as digits as its factorization.

10508770450021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 78400, while the sum is 40.

The spelling of 10508770450021 in words is "ten trillion, five hundred eight billion, seven hundred seventy million, four hundred fifty thousand, twenty-one".