10120221305 has 4 divisors (see below), whose sum is σ = 12144265572. Its totient is φ = 8096177040.

The previous prime is 10120221299. The next prime is 10120221383. The reversal of 10120221305 is 50312202101.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6641109049 + 3479112256 = 81493^2 + 58984^2 .

It is not a de Polignac number, because 10120221305 - 2²⁴ = 10103444089 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1012022126 + ... + 1012022135.

It is an arithmetic number, because the mean of its divisors is an integer number (3036066393).

Almost surely, 2^10120221305 is an apocalyptic number.

It is an amenable number.

10120221305 is a deficient number, since it is larger than the sum of its proper divisors (2024044267).

10120221305 is an equidigital number, since it uses as much as digits as its factorization.

10120221305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2024044266.

The product of its (nonzero) digits is 120, while the sum is 17.

Adding to 10120221305 its reverse (50312202101), we get a palindrome (60432423406).

The spelling of 10120221305 in words is "ten billion, one hundred twenty million, two hundred twenty-one thousand, three hundred five".