10550030021 has 2 divisors, whose sum is σ = 10550030022. Its totient is φ = 10550030020.

The previous prime is 10550030009. The next prime is 10550030123. The reversal of 10550030021 is 12003005501.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9087808900 + 1462221121 = 95330^2 + 38239^2 .

It is a cyclic number.

It is not a de Polignac number, because 10550030021 - 2³⁰ = 9476288197 is a prime.

It is a super-2 number, since 2×10550030021² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10550830021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5275015010 + 5275015011.

It is an arithmetic number, because the mean of its divisors is an integer number (5275015011).

Almost surely, 2^10550030021 is an apocalyptic number.

It is an amenable number.

10550030021 is a deficient number, since it is larger than the sum of its proper divisors (1).

10550030021 is an equidigital number, since it uses as much as digits as its factorization.

10550030021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 150, while the sum is 17.

Adding to 10550030021 its reverse (12003005501), we get a palindrome (22553035522).

The spelling of 10550030021 in words is "ten billion, five hundred fifty million, thirty thousand, twenty-one".