1222122021213 has 16 divisors (see below), whose sum is σ = 1660982101056. Its totient is φ = 799081962240.

The previous prime is 1222122021209. The next prime is 1222122021229. The reversal of 1222122021213 is 3121202212221.

It is not a de Polignac number, because 1222122021213 - 2² = 1222122021209 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1222122021213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222122021283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9559356 + ... + 9686357.

It is an arithmetic number, because the mean of its divisors is an integer number (103811381316).

Almost surely, 2^{1222122021213} is an apocalyptic number.

It is an amenable number.

1222122021213 is a deficient number, since it is larger than the sum of its proper divisors (438860079843).

1222122021213 is a wasteful number, since it uses less digits than its factorization.

1222122021213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19246124.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 1222122021213 its reverse (3121202212221), we get a palindrome (4343324233434).

The spelling of 1222122021213 in words is "one trillion, two hundred twenty-two billion, one hundred twenty-two million, twenty-one thousand, two hundred thirteen".