10222121009 has 4 divisors (see below), whose sum is σ = 10551866880. Its totient is φ = 9892375140.

The previous prime is 10222120991. The next prime is 10222121053. The reversal of 10222121009 is 90012122201.

It is a happy number.

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: 90012122201 = 154681 ⋅581921.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10222121009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10222121069) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 164872889 + ... + 164872950.

It is an arithmetic number, because the mean of its divisors is an integer number (2637966720).

Almost surely, 2^10222121009 is an apocalyptic number.

It is an amenable number.

10222121009 is a deficient number, since it is larger than the sum of its proper divisors (329745871).

10222121009 is an equidigital number, since it uses as much as digits as its factorization.

10222121009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329745870.

The product of its (nonzero) digits is 144, while the sum is 20.

The spelling of 10222121009 in words is "ten billion, two hundred twenty-two million, one hundred twenty-one thousand, nine".