10120221009 has 12 divisors (see below), whose sum is σ = 15387470800. Its totient is φ = 6391718424.

The previous prime is 10120220987. The next prime is 10120221029. The reversal of 10120221009 is 90012202101.

10120221009 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 10120221009 - 2⁷ = 10120220881 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10120220982 and 10120221000.

It is not an unprimeable number, because it can be changed into a prime (10120221029) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29591119 + ... + 29591460.

Almost surely, 2^10120221009 is an apocalyptic number.

10120221009 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

10120221009 is a deficient number, since it is larger than the sum of its proper divisors (5267249791).

10120221009 is a wasteful number, since it uses less digits than its factorization.

10120221009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59182604 (or 59182601 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

The spelling of 10120221009 in words is "ten billion, one hundred twenty million, two hundred twenty-one thousand, nine".