10030031221 has 4 divisors (see below), whose sum is σ = 11462892832. Its totient is φ = 8597169612.

The previous prime is 10030031213. The next prime is 10030031257. The reversal of 10030031221 is 12213003001.

10030031221 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12213003001 = 241 ⋅50676361.

It is a cyclic number.

It is not a de Polignac number, because 10030031221 - 2³ = 10030031213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10030031281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 716430795 + ... + 716430808.

It is an arithmetic number, because the mean of its divisors is an integer number (2865723208).

Almost surely, 2^10030031221 is an apocalyptic number.

It is an amenable number.

10030031221 is a deficient number, since it is larger than the sum of its proper divisors (1432861611).

10030031221 is an equidigital number, since it uses as much as digits as its factorization.

10030031221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1432861610.

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 10030031221 its reverse (12213003001), we get a palindrome (22243034222).

The spelling of 10030031221 in words is "ten billion, thirty million, thirty-one thousand, two hundred twenty-one".