22012221013 has 2 divisors, whose sum is σ = 22012221014. Its totient is φ = 22012221012.

The previous prime is 22012220983. The next prime is 22012221037. The reversal of 22012221013 is 31012221022.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20512827729 + 1499393284 = 143223^2 + 38722^2 .

It is a cyclic number.

It is not a de Polignac number, because 22012221013 - 2¹³ = 22012212821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22012221053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11006110506 + 11006110507.

It is an arithmetic number, because the mean of its divisors is an integer number (11006110507).

Almost surely, 2^22012221013 is an apocalyptic number.

It is an amenable number.

22012221013 is a deficient number, since it is larger than the sum of its proper divisors (1).

22012221013 is an equidigital number, since it uses as much as digits as its factorization.

22012221013 is an odious number, because the sum of its binary digits is odd.

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

Adding to 22012221013 its reverse (31012221022), we get a palindrome (53024442035).

Subtracting 22012221013 from its reverse (31012221022), we obtain a palindrome (9000000009).

The spelling of 22012221013 in words is "twenty-two billion, twelve million, two hundred twenty-one thousand, thirteen".