10005229921 has 2 divisors, whose sum is σ = 10005229922. Its totient is φ = 10005229920.

The previous prime is 10005229907. The next prime is 10005229961. The reversal of 10005229921 is 12992250001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7968061696 + 2037168225 = 89264^2 + 45135^2 .

It is a cyclic number.

It is not a de Polignac number, because 10005229921 - 2¹³ = 10005221729 is a prime.

It is not a weakly prime, because it can be changed into another prime (10005229961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5002614960 + 5002614961.

It is an arithmetic number, because the mean of its divisors is an integer number (5002614961).

Almost surely, 2^10005229921 is an apocalyptic number.

It is an amenable number.

10005229921 is a deficient number, since it is larger than the sum of its proper divisors (1).

10005229921 is an equidigital number, since it uses as much as digits as its factorization.

10005229921 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3240, while the sum is 31.

Adding to 10005229921 its reverse (12992250001), we get a palindrome (22997479922).

The spelling of 10005229921 in words is "ten billion, five million, two hundred twenty-nine thousand, nine hundred twenty-one".