1011121222169 has 2 divisors, whose sum is σ = 1011121222170. Its totient is φ = 1011121222168.

The previous prime is 1011121222093. The next prime is 1011121222211. The reversal of 1011121222169 is 9612221211101.

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., 1008056160400 + 3065061769 = 1004020^2 + 55363^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1011121222169 is a prime.

It is a super-2 number, since 2×1011121222169² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1011121222469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505560611084 + 505560611085.

It is an arithmetic number, because the mean of its divisors is an integer number (505560611085).

Almost surely, 2^{1011121222169} is an apocalyptic number.

It is an amenable number.

1011121222169 is a deficient number, since it is larger than the sum of its proper divisors (1).

1011121222169 is an equidigital number, since it uses as much as digits as its factorization.

1011121222169 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 29.

The spelling of 1011121222169 in words is "one trillion, eleven billion, one hundred twenty-one million, two hundred twenty-two thousand, one hundred sixty-nine".