22230012121 has 4 divisors (see below), whose sum is σ = 22234101712. Its totient is φ = 22225922532.

The previous prime is 22230012071. The next prime is 22230012157. The reversal of 22230012121 is 12121003222.

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.

It is a cyclic number.

It is not a de Polignac number, because 22230012121 - 2¹¹ = 22230010073 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22230012095 and 22230012104.

It is not an unprimeable number, because it can be changed into a prime (22230012191) 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, 2036631 + ... + 2047516.

It is an arithmetic number, because the mean of its divisors is an integer number (5558525428).

Almost surely, 2^22230012121 is an apocalyptic number.

It is an amenable number.

22230012121 is a deficient number, since it is larger than the sum of its proper divisors (4089591).

22230012121 is an equidigital number, since it uses as much as digits as its factorization.

22230012121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4089590.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 22230012121 its reverse (12121003222), we get a palindrome (34351015343).

The spelling of 22230012121 in words is "twenty-two billion, two hundred thirty million, twelve thousand, one hundred twenty-one".