22230121213 has 4 divisors (see below), whose sum is σ = 23537775420. Its totient is φ = 20922467008.

The previous prime is 22230121189. The next prime is 22230121217. The reversal of 22230121213 is 31212103222.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31212103222 = 2 ⋅15606051611.

It can be written as a sum of positive squares in 2 ways, for example, as 18026284644 + 4203836569 = 134262^2 + 64837^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22230121213 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 (22230121217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 653827078 + ... + 653827111.

It is an arithmetic number, because the mean of its divisors is an integer number (5884443855).

Almost surely, 2^22230121213 is an apocalyptic number.

It is an amenable number.

22230121213 is a deficient number, since it is larger than the sum of its proper divisors (1307654207).

22230121213 is a wasteful number, since it uses less digits than its factorization.

22230121213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1307654206.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 22230121213 its reverse (31212103222), we get a palindrome (53442224435).

The spelling of 22230121213 in words is "twenty-two billion, two hundred thirty million, one hundred twenty-one thousand, two hundred thirteen".