11312211220169 has 2 divisors, whose sum is σ = 11312211220170. Its totient is φ = 11312211220168.

The previous prime is 11312211220127. The next prime is 11312211220237. The reversal of 11312211220169 is 96102211221311.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9967678208569 + 1344533011600 = 3157163^2 + 1159540^2 .

It is a cyclic number.

It is not a de Polignac number, because 11312211220169 - 2¹² = 11312211216073 is a prime.

It is a super-2 number, since 2×11312211220169² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11312211220069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5656105610084 + 5656105610085.

It is an arithmetic number, because the mean of its divisors is an integer number (5656105610085).

Almost surely, 2^{11312211220169} is an apocalyptic number.

It is an amenable number.

11312211220169 is a deficient number, since it is larger than the sum of its proper divisors (1).

11312211220169 is an equidigital number, since it uses as much as digits as its factorization.

11312211220169 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 32.

The spelling of 11312211220169 in words is "eleven trillion, three hundred twelve billion, two hundred eleven million, two hundred twenty thousand, one hundred sixty-nine".