1121212213229 has 2 divisors, whose sum is σ = 1121212213230. Its totient is φ = 1121212213228.

The previous prime is 1121212213201. The next prime is 1121212213243. The reversal of 1121212213229 is 9223122121211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1030279810729 + 90932402500 = 1015027^2 + 301550^2 .

It is an emirp because it is prime and its reverse (9223122121211) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1121212213229 - 2¹² = 1121212209133 is a prime.

It is a super-3 number, since 3×1121212213229³ (a number of 37 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1121212213259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560606106614 + 560606106615.

It is an arithmetic number, because the mean of its divisors is an integer number (560606106615).

Almost surely, 2^{1121212213229} is an apocalyptic number.

It is an amenable number.

1121212213229 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121212213229 is an equidigital number, since it uses as much as digits as its factorization.

1121212213229 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1728, while the sum is 29.

The spelling of 1121212213229 in words is "one trillion, one hundred twenty-one billion, two hundred twelve million, two hundred thirteen thousand, two hundred twenty-nine".