1122121222213 has 2 divisors, whose sum is σ = 1122121222214. Its totient is φ = 1122121222212.

The previous prime is 1122121222199. The next prime is 1122121222331. The reversal of 1122121222213 is 3122221212211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 901707873889 + 220413348324 = 949583^2 + 469482^2 .

It is a cyclic number.

It is not a de Polignac number, because 1122121222213 - 2⁹ = 1122121221701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1122121222513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561060611106 + 561060611107.

It is an arithmetic number, because the mean of its divisors is an integer number (561060611107).

Almost surely, 2^{1122121222213} is an apocalyptic number.

It is an amenable number.

1122121222213 is a deficient number, since it is larger than the sum of its proper divisors (1).

1122121222213 is an equidigital number, since it uses as much as digits as its factorization.

1122121222213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 384, while the sum is 22.

Adding to 1122121222213 its reverse (3122221212211), we get a palindrome (4244342434424).

The spelling of 1122121222213 in words is "one trillion, one hundred twenty-two billion, one hundred twenty-one million, two hundred twenty-two thousand, two hundred thirteen".